Green light: Mystery whale, climate emails and fair trade

Endangered species The mystery of the 100-tonne whale Great white shark is more endangered than tiger How the pet trade's greed is emptying south-east Asia's forests What do you do with a 100-tonne rotting beached whale? Philip Hoare explains. Plus, why the great white is in worse shape than the tiger and how south-east Asia's forests are being silenced by the rampant and lucrative trade in exotic species. In pictures Banded Brothers: Mongoose group stars of new BBC show Meet the world's endangered primates Send us your spring snaps In the frame this week are banded mongooses and the most endangered primates in the world — we also have a story about why the primates are threatened . We'd also love to feature your pictures of spring (which if you live in the UK may still seem a long way off). Send your snaps of snowdrops, catkins, daffodils and the like to our flickr group . Climate science Jeffrey Sachs: Climate sceptics are recycled critics of controls on tobacco and acid rain Mark Lynas: True climate sceptics must stop the war on science David Adam: Climate wars damage the scientists but we all stand to lose in the battle Adam Corner: Do climate change sceptics give scepticism a bad name? Climate scientists withdraw journal claims of rising sea levels Sharp decline in public's belief in climate threat, British poll reveals The fallout from the hacked climate science emails is still generating lots of interest on the site. Economist Jeffrey Sachs's provocative piece comparing climate sceptics to people who delayed action on smoking related health problems as generated over 1000 comments. Meanwhile, scientists retracted an influential paper about sea level rise from top journal Nature Geoscience and an Ipsos Mori opinion poll suggests that the number of people in the UK who think climate change is a problem has dropped markedly in the last year. Green living How do you pick clean, green fruit and veg? You ask, they answer: Traidcraft Is tofu bad for the environment? As it's Fairtrade Fortnight we've invited ethical company Traidcraft in to answer your questions. Lucy Siegle is picking through her groceries asking how to buy green and Leo Hickman works out whether tofu is better than meat for the environment. Video highlights National Geographic: Yellowstone Park's grey wolves and grizzly bears National Geographic: Jaguar versus crocodile Wildlife rescue centre suffers in recession Debate of the week Want to promote cycling? Cut back car adverts now madridophile : If you can get the non-drivers cycling, then you might be in with a chance of encouraging drivers too; but regulating adverts is a silly way to try to achieve this aim. lukacs : We'll look back on this brief historical period when we left our single most expensive (non-residential) purchase to decay in long lines in our streets and then threw it on a huge heap after a few years to borrow money to buy another, as a delusional anomaly that humanity is prey to from time to time. jforbes : Making driving more expensive and improving public transport and cycling routes would have far more impact than any curb on advertising. Everybody's talking about This week: Collective climate action, cycling to work and the hockey stick graph And finally... Introducing the hydrogen-electric taxi this will be ferrying passengers on London's streets in time for the Olympics. And here's how it works .