Ecology
Breathtaking feats
Freediving whales, and some remarkable humans, offer startling technology-enhanced insights into extreme mammalian physiology.
The worrying sound of silence
Silence is not golden when marine life is at stake: it sends out warnings of shrinking biodiversity, and of climate change.
A deep-rooted movement
Ramachandra Guha's new book traces the origins of environmentalism in India, and profiles the pioneers in this field.
Going cuckoo!
The natural and cultural history of a mesmerising bird.
