Environmental alert in Santiago
Remains of rare dodo found
Five million-year-old whale fossil found
Avian malaria kills penguins
Ancient exploding harpoon found
Chikungunya reaches the US through tourists
Scientists discover new planet outside solar system
NASA announces new open source project
WWF worried about Napolean wrasse, an endangered fish
Report says pollution along Yangtze river increasing
Mexico's Chihuahuan desert holds some of the largest natural crytals
Giant cane toad found in Australia
Zimbabwe to cull elephants to check their growth
Scientists discover remains of Earth's crust
Anti-dumping duty on shrimp trade
Meningitis epidemic in Burkina
Large-billed reedwarbler found in Thailand
In short
Mozambique reels under floods
Six-nation deal ends North Korea's nuclear programme
Fresh evidence of water having flowed on Mars
Bird flu virus H5N1 strain found in Britain
Bush signs legislation to prevent over-fishing
Scientists discover stem cells from amniotic fluid
China's environmental agency to hear a wider variety of petitions