Light is changing, dramatically. Our world is getting brighter – you can see it from space. But is brighter always better? Artificial light is voracious and spreading. Vanquishing precious darkness across the planet, when we are supposed to be using less energy. The quality of light has altered as well. Technology and legislation have crushed warm incandescent lighting in favour of harsher, often glaring alternatives. Light is fundamental – it really matters. It interacts with life in prof...

A photographic celebration of the return of otters to our rivers and freshwater wetlands after a drastic decline.Ripples of excitement are spreading through Europe's rivers and wetlands. A generation ago, otter watching was a wildlife highlight restricted to remote coastal areas – otter populations had been decimated over the previous century by pesticide poisoning and habitat disturbance. Now we are seeing the positive effect of determined conservation efforts ove...