Ecology

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.
Mission insects
Insects keep our planet running. There is an urgency to stem their decline but it will take science and technology to work in tandem.