An idea like that used in noise-cancelling headphones helps to minimise "noise" in optical fibres - making them able to carry data far further.

Five severely disabled stroke patients show signs of recovery following the injection of stem cells into their brain.

Ecuador's space agency is trying to fix its first and only satellite after it suffered a lateral collision with space debris on Thursday.

A campaign group takes court action in South Africa over the removal of an advertisement urging President Jacob Zuma to ban the trade in lion bones.

Plants covered over by glaciers centuries ago have been seen sprouting new growth, a find with implications for how ecosystems recover from ice ages.