Peter Hadfield investigates the illegal trade in Siamese rosewood.
David Attenborough and fellow experts join Tom Heap to preview the Paris Climate Summit.
Tom Heap investigates claims England's rivers are under threat from 'insidious' pollution.
Bad news for lovers of tapenade and pesto - olive trees are succumbing to a new disease.
A new report reveals how the UK's coast has changed over the last 50 years.
The National Parks are exploring new commercial opportunities. How far should they go?
Have we been lied to about air pollution? Tom Heap investigates.
Urban Britain is paving over its front gardens. Jheni Osman discovers the impact.
Professor Alice Roberts asks how ocean acidification will alter sea life.
Can Britain save the oceans by protecting its overseas territories? Tom Heap reports.