Heat wave hits Europe

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

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

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

269 dead in oil pipeline blast in Lagos