Which is the bigger threat to wildlife: Radioactivity or humans? Wildlife ecologist Jim Beasley has gone into the contaminated zones around Chernobyl and Fukushima to learn the answer, and his findings are both sobering and inspiring.
Russian artist Uldus creates surreal photographic portraits of maidens, demons, heroines and gnomes.
Secrecy is often used as a legal shield to cover up illegal actions by businesses. Anti-corruption activist and TED Prize winner Charmian Gooch explains why we should care — and what we should do.