New findings suggest birds learn the art of nest-building, rather than it being just an instinctive skill.

Kenya's Nobel laureate, forests campaigner Wangari Maathai, dies in Nairobi while undergoing cancer treatment.

Delhi Metro becomes the world's first railway network to earn carbon credits from the United Nations for helping to reduce greenhouse gas emissions.

Archaeologists hope to be able to return to the site of a 9th Century monument after a new dig unearthed remains dating back to the Bronze Age.

US planemaker Boeing is due to deliver its first 787 Dreamliner to Japan's All Nippon Airways, after three years of delays.

Researchers unveil a design for an "antimagnet" - a sort of invisibility cloak that undoes the effects of magnetic fields and which could find wide application.

Japanese mobile operator NTT DoCoMo is reportedly developing a series of skins for smartphone which will measure, among other things, radiation levels and body fat.

The cost of treating cancer in the developed world is spiralling and is "heading towards a crisis", according to an international team of researchers.