It's chemistry's greatest challenge – inventing systems that turn water and sunshine efficiently into cheap, clean energy for all.

Researchers are sure that they can put lab-grown meat on the menu

The Copenhagen climate change meeting needs to make decisions on the structures and institutional arrangements to fund and deliver climate change adaptation (CCA) at the international level, and mechanisms to integrate CCA principles and approaches into developing country policy processes.

It's simple to mop carbon dioxide out of the air, but it could cost a lot of money. In the second of three features on the carbon challenge, Nicola Jones talks with the scientists pursuing this strategy.

As the United States heads for a showdown at the polls, its Canadian neighbour is rushing out its own election