The detection of gold in tree leaves helps to locate deposits buried in the earth, Australian scientists find, and it could also apply to other metals.

The emerald ash borer, a tree-killing beetle that has cost the US economy billions of dollars, could "spread unhindered" across Europe, a study warns.

Male and female flowers of the same plant advertise their different "rewards" by giving off different scents, scientists say.

The Liberal Democrats accused David Cameron of making a "panicky U-turn" after he announces a review of green energy taxes, but the PM says the move will drive down bills.

An international team of astronomers has detected the most distant galaxy yet.

Greenpeace activists held in Russia over a protest against Arctic oil drilling face lesser charges of hooliganism rather than piracy, officials say.