Dr Stewart Barr

College of Life and Environmental Sciences, University of Exeter

With all the investment in behaviour change campaigns and infrastructure, why is there still material that can be recycled going into the bin in our homes? Only half of all plastic bottles are currently sent for recycling, revealing a significant gap between the strong environmental values people profess and their behaviour.

Jens Christensen

The Basterds Production Company – Founded By The Winners Of The Can Makers Film Competition

We're going to need a camera, a microphone, some actors, a big bag of aluminium cans... and an old school hue blue VW camper van. And a quick 'teach yourself film making' brainstorm. Then once it's all in place, we'll go and make a film to enter into the search for green student film makers.

Maria Sowter

Online Content Editor for non-profit volunteering NGO Frontier, passionate about travel, culture and digital media

A diverse ecosystem means a productive ecosystem, as each small part that makes up the larger whole plays a vital and important part in keeping the machine functioning. With millions of species in the world, biodiversity is one of our biggest economic resources for medicine, food and natural materials.

Green Futures

The leading magazine on environmental solutions and sustainable futures

Food shortages in India are compounded by a lack of cold-chain storage facilities, but a new solar-powered cold storage device, developed by the University of Cincinnati in partnership with industry, could put this problem on ice.

Douglas Stewart

CEO, Green Energy UK

It's Green Office Week, so I've put together some useful tips for 'greening-up' the workplace...

Anders Lorenzen

Danish born, London based environmentalist

Bjørn Lomborg he claimed that green energy technologies are too expensive and energy inefficient, and we should frack more and reduce subsidies for renewable energy. I will try to tackle his points and clarify why I believe he is wrong on almost every single issue.

Jean Lambert

London’s Green Party Member of the European Parliament

There are all sorts of positive reasons why the UK shouldn't leave the European Union: the freedoms afforded its citizens, the commitment to international co-operation, the environmental benefits it brings, the workers' rights it requires, the international status membership affords the UK, and so on.

Murad Qureshi

Londonwide Assembly Member

When the Government published its aviation policy framework in draft form, it asked the right questions about noise, air quality and climate change, but the final version fails to deliver on these. It is disappointing that so few of the recommendations we and others made have been taken up by the Government.

Anders Lorenzen

Danish born, London based environmentalist

Its clear what we need to do to avoid dangerous climate change; we must wean ourselves off fossil fuels, leave the remaining ones in the ground and make the big switch to renewable energy.

Alastair Roderick

Research Fellow at the Schumacher Institute for Sustainable Systems

OK, don't freak out about what comes next. The growing environmental crisis, and especially those determined to do nothing about it, or even outright deny it, is in economic terms the modern equivalent of slavery. Before you report me to the Daily Mail, do hear me out, and please note my emphasis on economic.

Emily Buchanan

Writer, digital editor and nostalgic bibliophile

Michael Gove needs to understand that environmental education is not a choice - it is an explicit priority. And whilst you can give teachers the chance to develop their own educational structure based on broad "purposes of study," certain topics must be compulsory.

Mike Giles

Journalist and communications adviser; Fmr. political adviser to MP

Despite the US-led invasion of Afghanistan starting back in October 2001, around 9,000 British soldiers still remain stationed in the country to this day, with a remit of training up local military forces to take over security by the end of 2014.

Ben Acheson

Energy and Environment Policy Adviser and Parliamentary Assistant to Struan Stevenson MEP at the European Parliament in Brussels

Despite their importance, around 2-7% of global blue carbon sinks are lost annually - four times the rate of loss of rainforests. Building massive turbines near such resources will only exacerbate the damage and release huge amounts of CO2 into the atmosphere.

Sue Cross

Author

In many parts of the world incomes are increasing and ever more people are moving into cities. Lifestyles are changing. And so are diets.

Nancy Campbell

Writer and book artist

No two artists have the same response to the sea.

Mimi Bekhechi

PETA UK's Associate Director

This Earth Day, 22 April, many environmentalists will be advocating the three R's - recycling, reusing and reducing. While these actions are important and worthwhile, we would be better off focusing on a different letter: V for vegan.