Are too many people joining the world’s highest traffic jam?

Why are US trees helping keep the lights on in Britain?

Mapping airline flight paths across the globe

The BBC's environment analyst, Roger Harrabin, explains why millions of American trees are being shipped to the UK for burning in power stations.

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

A campaign group takes court action in South Africa over the removal of an advertisement urging a ban on the trade in lion bones.

Germany's national railway company, Deutsche Bahn, plans to test small drones to thwart vandals who spray graffiti on its property.

The 'shenanigans' planned in orbit by Europe's newest astronaut

North West 200 riders on stress and the heart

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 small group of stroke patients have shown some signs of recovery after having stem cells injected into their brains in the first stage of a clinical trial.

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.

Two prominent scientists will join a select band of famous names, such as Torvill and Dean, to become freemen of Nottingham.

An injured turtle found by a fisherman in Florida has been returned to the sea after being treated at a rescue centre.

What we have learnt from Martian probes

Chilean authorities fine the world's largest gold mining company, Barrick Gold Corp, more than $16m for environmental offences at an Andean mine.

A mutant strain of cockroach that can outsmart the sugar traps used to kill them has evolved, scientists in the US have found.

People with higher IQs are faster at detecting small moving objects but slower at noticing larger background ones, say US researchers.

The suspension component that could support a full grid of F1 cars