Early tests suggest 2-heptanone may also find a role in humans as a local anaesthetic.

BBC: Honey-bees found to have bite that stuns

Conservationists are pushing government and park officials to ensure animals, humans and the local environment are better protected.

CNN: The Gathering: Sri Lanka's great elephant migration

Institutional Review Boards, the local bodies that check research on humans and are the main overseers of such research, are swamped with work, sometimes examining hundreds of proposals a year.

ECONOMIST: Don��t let it happen again