New Scientist

Global warming may lead to an unexpected threat from the insect world - swarming invasions of tiny ants - suggests new research. By Shaoni Bhattacharya

Contrary to popular belief, hydroelectric power can seriously damage the climate. Proposed changes to the way countries' climate budgets are calculated aim to take greenhouse gas emissions from hydropower reservoirs into account, but some experts worry that they will not go far enough.

The climate modelling software divides the Earth's surface into boxes hundreds of kilometres square. By Jenny Hogan

In February 2003, astronomers involved in the search for extraterrestrial intelligence (SETI) pointed the massive radio telescope in Arecibo, Puerto Rico, at around 200 sections of the sky. By Eugenie Samuel Reich.