Christine Ottery

Christine is a freelance journalist and blogger, with credits at Comment is Free in the Guardian, The Science Reporter, and Theecologist.org.

Pusher and consumer of social media, including Twitter and Audioboo.

She is currently working on an MA in science journalism at City University London.

May 202010

By Christine Ottery

Climate science has shown in the past six months that – and sorry if this is a climate change cliché – things are worse than we thought. According to the most up-to-date science, Clive Hamilton, author of Requiem for a Species: Why we resist the truth about climate change says that we are likely to see warming of 4 degrees by 2070 or 2080. Despite this, some recent climate change studies have not made a much of a splash, obfuscated in a fug of Climategate. Hamilton thinks there has been a campaign against climate scientists. You can read more about this in an extract of his book here.

Professor Clive Hamilton

Hamilton also examines the yawning gap between the public perception of climate change and the science. Why do people’s beliefs, and therefore actions, stray from the facts? At a talk at the RSA, Hamilton states that people fall into three groups: those that don’t accept manmade climate change, including denialists; those with maladaptive strategies, who accept the facts but can act as if they don’t exist; or people who are adaptive and behave in line with reality. Hamilton says most of us are maladaptive, so there are real question marks over how we are going to face the challenges of climate change.

I caught up with Hamilton after the debate to continue the discussion of how to get people to act on climate change.

Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

[Credit: www.freesound.org/eraylik for Protest_Zara_Day, mw_1984 for rallyclap2, dobroide for 20070210.helicopter, medialint for Iraq_War_Demonstration_SanFrancisco, osivo for newspaper and ERH for by any means]

Barefoot running

Posted by Christine Ottery at 10:18 am
May 202010

By Christine Ottery

Barefoot running a new trend in fitness. But is it actually better for you than running in traditional padded trainers? I spoke to some experts, including podiatrist Justin Coulter and sports scientist Lee Saxby to find out – once I’d got my breath back from trying barefoot-style running for myself.

Is it better for us to walk and run barefoot?

Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

For more information see my feature on The Ecologist website.

May 202010

By Christine Ottery

Fungus helps plastic decompose

BPA, or ‘bisphenol A’, is a plastic that has a bad rep. It is very hard wearing, and used in everything from DVDs to lenses in glasses, but this also means that it resists decomposition. According to the Food Standards Agency, there is also concern over the safety of BPA, especially with regards to the development of fetuses and young children.

Fungi may provide an eco-friendly way of decomposing plastics containing BPA. Image credit: American Chemical Society

Scientists working in Chennai, India have published a new study in the journal Biomacromolecules that suggests pre-treating plastics containing BPA with UV heat and light and exposure to specific fungi can increase its rate of decomposition – crucially without releasing BPA in the process. This is because the fungi feed off the BPA for energy. ((Artham, T., & Doble, M. (2010). Biodegradation of Physicochemically Treated Polycarbonate by Fungi Biomacromolecules, 11 (1), 20-28 DOI: 10.1021/bm9008099))

Seas heating up

Swimming in warm seas on holiday is part of the fun. But the oceans heating up is actually a troubling indicator of climate change, because the upper ocean absorbs excess energy created by manmade greenhouse gases.

A new international meta-analysis, led by John Lyman from National Oceanic and Atmospheric Administration, Seattle, and published in Nature, came to the conclusion that there has been a warming trend of 0.64 watts per square metre from 1993 to 2008. Lynas and his colleagues had to compare and investigate previous studies with conflicting results to reach their figure, which is important because it can now be fed into various climate modelling scenarios. ((Lyman, J., Good, S., Gouretski, V., Ishii, M., Johnson, G., Palmer, M., Smith, D., & Willis, J. (2010). Robust warming of the global upper ocean Nature, 465 (7296), 334-337 DOI: 10.1038/nature09043))

Corals come to mama

Marine researchers based in Curaçao in the Carribean have found that coral larvae use sounds to find parent reefs. Coral larvae, which look like tiny hair-covered eggs, must find a safe place to establish or they will perish.

A study published in PLoS ONE showed that coral larvae, which are visible to the naked eye, choose to move toward sound recordings of a coral reef out of two tubes they can go down.

It is unknown how the coral larvae detect sound but one hypothesis states that the sound could disturb water molecules that move the hairy cells of the larvae, acting as a directional prompt.

However, there is concern among scientists that vulnerable coral ecosystems could be threatened by manmade rising levels of underwater noise pollution, which could endanger the coral larvae. ((Vermeij, M., Marhaver, K., Huijbers, C., Nagelkerken, I., & Simpson, S. (2010). Coral Larvae Move toward Reef Sounds PLoS ONE, 5 (5) DOI: 10.1371/journal.pone.0010660))

Government sign up to 10:10

The new Lib-Con coalition has announced that they are committed to reducing the Government’s carbon footprint by 10 per cent in a year, in line with manifesto pledges to sign up to the 10:10 campaign.

David Cameron and Chris Huhne, the new secretary for energy and climate change, made a speech at the Department of Energy and Climate Change (DECC).

‘We are going to publish, in real time, how much energy that each department is using,’ says David Cameron. This transparency means that the public will be able to monitor the progress of government on their journeys to cut their carbon emissions by 10 per cent.

10:10 campaginers say that if the Government achieves its objective, it is ‘equivalent to taking 200,000 cars off the road.’

See the video below:

Cameron Commits Government to 10:10 from 10:10 on Vimeo.

Ethical bananas

Posted by Christine Ottery at 7:56 am
Mar 112010

By Christine Ottery

Bananas are the favourite fruit of Britain. According to 2009 figures from TNS, Brits spend £587 million a year on bananas, and so choosing to buy Fairtrade can actually be a powerful consumer decision.
“You are getting more money back down to the primary producer and less money going to the plantations, that’s a very important choice,” says Professor Tim Lang, a food policy expert at City University London.

Banana producers, VREL, Ghana ©2005 Gary Roberts

As many as one in four bananas on our shelves in the UK is Fairtrade, as certified by the Fairtrade Foundation, with some supermarkets, such as Waitrose and Sainsbury’s selling only these types of bananas. So it has never been easier to get our mitts on these bendy yellow fruit. But how does it work when we buy Fairtrade?

For the customer, it could means a slight increase in price, although currently Sainsbury’s Fairtrade bananas are 17p each, the same as Tesco’s which are not Fairtrade (although they do sell a Fairtrade pack as well, normally working out at 25p each, now on offer for 20p each).

However, it may be worth spending a few pennies more to buy the ethical option. Mike Gidney, the deputy director of the Fairtrade Foundation, tells me that Fairtrade helps banana growers to build a future for themselves. This is because, for small-scale farmers, prices they get from their harvests can fluctuate wildly. The minimum price that the farmers get who are growing Fairtrade bananas get is “a huge lifeline”, he says.

A report conducted by the Natural Resources Institute, University of Greenwich, for the Fairtrade Foundation, reviewed several case studies to determine the impacts of Fairtrade on the producers. The review found that Fairtrade offers farmers greater stability and security, giving them the opportunity to invest in their businesses and grow them.

For example, the Windward Islands in the Caribbean sell 70 per cent of their bananas on a Fairtrade basis. “But what they are doing now,” says Gidney, “which is brilliant, is going out of bananas – and into ecotourism and packaging and processing. This is real step change to them.”

In addition to the stability that a fixed minimum price offers, premiums are paid to Fairtrade producers for community improvement purposes. These are chosen by co-ops of growers. Lang says: “It makes a huge amount of difference as to people’s livelihoods, their health, whether their kids go to school… it’s just vast.” For example, in the Windward Islands, they have spent their premiums on a range health and fair trade projects.

Fairtrade vs free trade

Fairtrade has its detractors, though. Critics from the Adam Smith Institute, a free market think tank, say that fair trade interventions limit the amount of profit that small producers are able to make and sets prices artificially high for the consumer.

One skeptic and writer, Simon Perry, writes that: “Instead of opting for ethically labelled packaging that makes us feel good about ourselves, perhaps we should be doing something that offers a genuine chance of improving the lives of the impoverished – campaigning to eliminate trade barriers and putting an end to farming subsidies.”
However, the free market has too little regulation, as we have recently seen with the banking crisis. Gidney says: “[free] trade is an incredibly uneven playing field, when you think about economies as disparate as the UK’s economy and an economy in Africa, Malawi for example. It is completely crazy to say we can operate on a free trading basis without Malawi being at a substantial disadvantage.”

“There has been 200 years of discussion about free trade. The terms ‘free’ and ‘trade’ sound absolutely wonderful when put together, but the realities are more complicated, we don’t have free trade,” says Lang. He tells me this is because powerful countries and corporations set the terms and conditions of trade.

Only a month ago, the EU lifted its preferential trade agreements to growers in the Caribbean. The Fairtrade Foundation was concerned that, although this had been in the pipeline for some time, there was very little help for Caribbean farmers from the EU, in terms of financial or technical assistance to adjust to the fact their bananas would suddenly be more expensive for retailers to buy. “They are really caught on the hop and saying they really need Fairtrade more than ever, to get the minimum price and the premium,” says Gidney.

There is hypocrisy in the fact that European farmers are subsidised to produce fruit while the counties in the developing world are having their preferential tariffs removed.

Blood bananas

Lang couches the fair trade versus free trade debate in strong terms: “To say whether this is a matter of free trade or protectionism completely misses the point. The point is: do you want blood on your bananas or do you want to have some dignity with your bananas?”

In a recent case, a large multi-national company called Chiquita, which is the biggest distributor of the fruits in the US, admitted to funding paramilitary groups to protect their large plantations in Colombia. They paid damages of $25 million.

In the past banana companies have been criticised for creating what are called “banana republics”, which are corrupt collusions between state and corporation, usually occurring when an industry accounts for a large proportion of GDP. For instance, at one time 60 per cent of Honduras’ exports were bananas. The political ramifications can reach far and wide, including the suppression of worker’s rights.

Banana farmer, Ecuador, Pablo Prieto, Transfair Austria

The most ethical banana

Ethics isn’t just about worker’s rights, however compelling. The magazine Ethical Consumer judges its reviews of products on many criteria, including: environmental impact, political activities and sustainability.

Both Gidney and Lang swerve the question of what the most ethical banana would be, where it would come from. Lang says he thinks there is too much labelling on products and would prefer a single “Good Food” label for products that protect worker’s rights and are nutritious.

Rob Harrison, the editor of Ethical Consumer, says that from a consumer point of view, buying bananas that bear both the Fairtade and the Organic marks is one of the best options if you can find them, as organic farming methods around the world mean that biodiversity is preserved, and workers are not exposed to pesticides. This is reflected in the price, with Fairtrade ‘So Organic’ bananas in Sainsbury’s edging towards 30p each.

But Ethical Consumer’s 2006 report on bananas tips Fairtrade Windward Island bananas as the most ethical, because, Harrison points out, have a particular dependency on this crop and need all the sales they can get. It is possible to buy Caribbean bananas in a range of supermarkets, and these tend to cost around 23p.

So, is it more ethical to buy fairtrade, organic bananas or fairtrade bananas from the Windward Isles? Harrison says: “Both are an ethical choice. It will ultimately be each individual’s call as to whether to prioritise a specific development goal (Windward Islands) over a general raising of production standards towards sustainability.”
In terms of carbon footprint, as we are not able to grow bananas in the UK, they have to be shipped in from Latin America or the Caribbean. There’s no way around the fact that our nation’s favourite fruit has high carbon emission collateral. One American journalist calculated that gobbling a banana every day would eat up nearly half of personal CO2 footprint targets as set out on the website Eat Low Carbon Diet.

To solve that particular problem means buying local fruit, such as apples and pears, instead of bananas. But if you are hooked on the curvy yellow fruit, as many of us are, take comfort from the Fairtrade and Organic marks or Windward Isle labelling to know you are supporting small-scale growers in the developing world.

Mar 102010

By Christine Ottery

Bees are stayin’ alive

Worker bumblebees normally die in the UK winter, while the queen bees hibernate. However, there has been a remarkable increase in bees spotted in the frosty winter months.

Bombus terrestris worker foraging for pollen on winter flowering honeysuckle - Taken on 1/12/09 in Kew Gardens. Photo credit: Dr Thomas Ings

Scientists from Queen Mary, University of London have discovered that this is because a certain type of bee, the buff-tailed bumblebee, can feed on the nectar from exotic plants in public parks and gardens. The winter-flowering plants that have been found to support the buff-tailed bumblebee by the study, published in the journal PLoS One, include strawberry trees and holly-like Mahonia.

Can the shift in behaviour of the buff-tails be attributed to climate change or simply a British love of gardening? Dr Thomas Ings from Queen Mary’s says that it is tempting to link warmer winters and the new winter worker bees, but the crucial factor is the cultivation of exotic winter-flowering plants. For this study, the bees were tagged with minute Radio Frequency Identification chips to monitor their activity.

Dr Ings will be carrying out further research into the reasons for the bees’ behaviour change, including the effect of the cold winter we have had this year. ((Stelzer, R., Chittka, L., Carlton, M., & Ings, T. (2010). Winter Active Bumblebees (Bombus terrestris) Achieve High Foraging Rates in Urban Britain PLoS ONE, 5 (3) DOI: 10.1371/journal.pone.0009559))

Tree of life

A tree species can help people in the developing world to purify their water cheaply. This could be a life saver for the 1.8 million a year who die from waterborne diseases that cause Diarrhoea, according to the World Health Organisation, 90 per cent of whom are children in developing countries.

The Drumstick tree is endemic to India but also grows in Africa, Central and South America and Southeast Asia. However, the methods for using the trees’ seeds to treat water so it is drinkable are little-known, even where it is cultivated.

Now a review on the use of the Drumstick tree to purify water has been published in Current Protocols in Microbiology, and the process is free to download and share.

The Moringa seed powder, when mixed with water, forms a suspension that causes sediment in the raw water to aggregate into larger particles, which then settle at the bottom of the container. The sediment is then removed, and water is clear and clean. This can reduce bacteria in untreated water by 90 to 99.99 per cent. ((Michael Lea (2010). Bioremediation of Turbid Surface Water Using Seed Extract from Moringa oleifera Lam. (Drumstick) Tree Wiley InterScience DOI: 10.1002/9780471729259.mc01g02s16))

Malaria on the move

Climate change is one of the reasons for the rising incidences of malaria over the past 40 years in the highlands of East Africa.

There had been some conflicting evidence over whether this change was caused by warming. But a new meta-study of over 70 papers published in The Quarterly Review of Biology concluded that the research papers finding climate change to be a cause of the increase in malaria were robust, while the studies showing there was no warming were not statistically strong.

Both the mosquito and the parasite that causes malaria in humans respond to changes in temperature that affect their development and survival. Even a small rise in temperature can cause big increases in the spread of malaria.
The meta-study’s authors from Emory University in Atlanta, US, and Wageningen University in the Netherlands stressed that climate change is only one aspect of a multi-faceted problem. Migration and land-use changes have also encouraged the spread of the deadly disease.

Malaria kills around one million people a year, most often African children. ((Chaves, L., & Koenraadt, C. (2010). Climate Change and Highland Malaria: Fresh Air for a Hot Debate The Quarterly Review of Biology, 85 (1), 27-55 DOI: 10.1086/650284))

Underwater carbon digestion

Scientists at Harvard University have been studying the ocean-dwelling cyanobacteria to find out more about the carbon cycle.

Cyanobacteria are rod-shaped, one-celled organisms that reuse and recycle 40 per cent of carbon in the carbon cycle.

A new study explaining how these tiny but important bacteria “fix”, or digest carbon has been published in Science.
Scientists tagged proteins in the bacteria with fluorescent compounds and could see that cyanobacteria create round structures inside themselves that act as factories turning carbon into sugar and then energy.

The cyanobacteria organise these mini factories spatially, which might have implications for designer bacteria. It could help make more efficient biodiesel-producing bacteria. And the factories, called carboxysomes, could also help engineer bacteria that synthesise hydrogen because they have an outer shell that would protect hydrogen-making enzymes from oxygen, which interferes with the process. Both are carbon-neutral fuels. ((Savage, D., Afonso, B., Chen, A., & Silver, P. (2010). Spatially Ordered Dynamics of the Bacterial Carbon Fixation Machinery Science, 327 (5970), 1258-1261 DOI: 10.1126/science.1186090))

Mar 032010

By Christine Ottery

The Government’s new feed in tariff (FIT) policy, announced in early February, is designed to encourage householders to invest in renewable energy by giving returns on any electricity generated and exported to the grid.

In practice this means laying out an initial £12,500 to buy and install solar panels and then reaping £1,000 a year for the next 25 years. It makes firm financial sense to buy into FITs, but what will determine people’s choice to invest when the policy comes into play on 1 April? “It is psychological, partly, and it’s partly the real world. It’s hard to draw the line,” says Paul Stern, the world’s leading environmental psychologist.

Solar photovoltaic panels. Photo credit: Julian_

The Energy Saving Trust (EST), part of the Department of Energy and Climate Change (DECC), hope that once FIT is up and running it will stimulate small energy company start-ups to install the panels free-of-charge for convenience and finance reasons, then charge you a rent on your electricity while bagging the tariff. This will be made possible because householders will be able to assign the tariff rights to others.

The Good Energy Company is already one step ahead, as it has been operating a system similar to FITs for the past four years called the “Generate your own” scheme which facilitates the adoption of microgeneration, meaning small-scale production of energy. They claim to be able to get people started in microgeneration with an investment of around £4,000.

Information, information, information

Even if the costs of microgeneration become accessible for a larger number of people, there are still several barriers to committing to it. One of these is simply information. “Some of psychology is about human information processing, and this is a kind of a household decision that is unfamiliar and easy to postpone,” says Stern. He says that people will have many questions about the implications of investing in solar PV, such as: how much money they will get in return, what the benefits are, and the practicalities of installation and living with solar PV.

The EST is working hard to provide comprehensive information on renewables and microgeneration on their website, www.energysavingtrust.org.uk. The Renewables Strategy Manager of EST, Rob Lewis, says: “There is already a home energy selector tool on our website, helping people to understand which technologies are suitable for their house. We will also be putting a new tool online where you can input the technology you will want to install and it calculates what the cumulative cashflow will be in year one, including loan repayments, if you have them.”
Another possible solution to the challenge of making the public informed is local demonstrations that would get people talking about solar PV, and crucially, they would be able to see and interact with the technology. “It makes it more real. This is a very foreign thing for most people,” says Stern.

There is much potential for influencing public opinion. Householders could influence communities to invest in community projects such as solar PV for the community hall, for example. Also, Stern says that two out of three successful renewables co-ops in Washington DC were initiated by individuals who were environmental professionals. Conversely, “There is a big potential for local authorities and local community groups to do community microgeneration in a demonstration role which can then lead to household developments after that,” says Professor Patrick Devine-Wright, one of the UK’s top environmental psychology experts.

Solar photovoltaic cells. Photo credit: Julian_

Green halo

Householders that already have PV installed are likely to be very eco-conscious, and therefore it may not be realistic to expect further changes to their lifestyle. Prof Devine-Wright says that: “As is often the case with solar PV panels, the kinds of people who install it on their homes will already have pretty green attitudes, or they wouldn’t be bothered spending so much of their money on a pretty expensive technology.” This is partly because installing solar PV is not the best value-for-money measure to reduce a building’s carbon footprint. Tackling loft and cavity wall insulation is more cost effective, and should be the first port-of-call for house owners.

However, the FIT could increase the amount of people who are reducing the carbon footprint of their homes by the promise of substantial financial return. Also those who already have solar PV might not have a squeaky-clean carbon footprint but they could be influenced into greening up their act further. Dr James Keirstead at Imperial College, London, wrote his PhD on the way people responded to having solar PV installed in their home, and found: “Some people didn’t realize they could make changes to their energy consumption, and having PV and having the information made them aware that, yes, it was possible.”

However, a researcher also at Imperial, Dr Dana Abi Ghanem, says that there is the fear that because people might view their energy supply as “free” because is from an endless supply of solar radiation, they might actually increase their energy consumption.

A paper from a group of researchers at the University of Toronto seeks to explain this kind of behaviour. It explores the relationship between the marketing of green products and their purchase, suggesting that exposure to something that people attach social or moral values to results in a halo effect whereby people will act in a more environmentally-friendly way. But, surprisingly, acting upon your values can make you more selfish. One of the researchers, Chen-Bo Zong, says: “I think it is possible that people who preserve energy in one way may feel entitled to waste energy or material in another.

“The key is whether they see the energy-saving behavior as something good and positive, which enhances their self-image,” says Zong.

Perhaps this explains why a report published by the EST says that: “Being seen to be green is popular among 70 per cent of the population but only 40 per cent are taking action.”

However, Zong also added: “If people see those activities as necessary and form habits doing so, such a licensing effect may be reduced.”

Using your smarts

Regardless of whether you have PV panels on your roof, energy displays could have a far more significant effect on your green virtue. Dr Abi Ghanem says: “If it is displayed prominently in a way that increases exposure, people are more likely to reduce their energy consumption. Energy starts to exist within the house and people become more conscious of it.” This makes sense because electricity is invisible, and energy meters provide visible reminders of how much energy you are creating through microgeneration.

Prof Devine-Wright agrees, and says that microgeneration displays and smart metering should be rolled out together, so that people can interact with how much energy they are producing, how much money they are making, and how much energy they are consuming.“We need more engagement with energy consumption if we are going to reduce demand and become more sustainable in our patterns of energy consumption,” he says.

Feb 232010

March is looking tasty as far as events are concerned, and there’s all kinds of geeky entertainment on offer. Here are just a couple of picks:

Show your support of the campaign for improved libel laws by lapping up the high-brow comedy fare at The Big Libel Gig on Sunday 14 March.

The second in this year’s series of Science Fair events will be rocking out the very next day at The Book Club in Shoreditch.

I’ve been trickling events into the event calendar each week - so keep coming back, more and more will apear. If you have any suggestions for our pick of events then please get in touch by posting a comment or using the contact form.

By Christine Ottery

Scientists are finding a treasure trove of minute, single-celled organisms in ponds on a wildlife reserve in Dorset. Several new species, which are invisible to the naked eye, have been uncovered at the East Stoke Fen reserve. These creatures form part of what is being termed “cryptic biodiversity”.

Two months in and the project, being carried by researchers from Queen Mary, University of London in conjunction with the Dorset Wildlife Trust, has already found over 30 species of invertebrates which are smaller than half a millimetre and over 100 single-celled ciliates, which are coated in hair-like structures.

The research aims to incorporate these tiny organisms into biodiversity surveys. This will increase our understanding of how ecosystems might react to global warming, so conservation management can be improved.

Micro-organisms adapt

The equally tiny Plagiopyla inhabits waters with no oxygen. Each single-celled life form has a Pac-man-like mouth for munching microbes. Picture Credit: B.J. Finlay.

Cryptic biodiversity helps natural ecosystems to bounce back in response to environmental change,” says lead scientist Dr Genoveva Esteban. This is because the miniscule organisms can adapt function and shape to a changing environment, allowing the ecosystem to continue to work.

Dr Esteban adds: “Local biodiversity conservation will become all-embracing by covering the full range of aquatic organisms that contribute to the proper functioning of an ecosystem – not just those judged as ‘charismatic’.”

Major role in energy cycling

Single-celled organisms play a foundation role in supporting the whole pond because they photosynthesise – converting the energy of the sun to produce their own carbon compounds. They are also vastly abundant and reproduce rapidly. This makes them prey for small protozoa, which are eaten by zooplankton, which are then gobbled up by fish larvae, insects and other creatures higher up in the food web.

Biodiversity-rich pond life

Studying ponds is important because they are a source of rich biodiversity: “they are very heterogeneous physically and chemically, so that tends to provide a wide range of niches for plants and animals” says Jeremy Biggs, director of policy and research at Pond Conservation, a charity campaigning to preserve small bodies of water.

For example, Purbeck Ponds, also in Dorset, is home to the rarely-seen Great Crested Newt, and is a haven for almost all endemic dragonfly species. The ponds have been a UK priority habitat since 2007, and are being studied as part of a two-year project. A new phase of the project, which will bring the Wet Fens under the microscope, was launched at the start of the year.

Our recent tweets

  • http://www.elements-science.co.uk/ - more updates from the guys here at #Elements, including @Anka_Li discussing #robots and #autism.
  • #Environment - Plants on the run http://tinyurl.com/2vjwnce Follow #migration of species adapting to #climatechange by @DazzMcGuinness.
  • #Elements is BACK. http://www.elements-science.co.uk/ - the best #science articles on the web, from #environment #health and #technology.

RSS In the news