New images of Moon landing sites
A US spacecraft takes pictures of Apollo landing sites on the Moon, showing footprints and hardware left behind decades ago.

Astronauts on ISS spacewalk
Astronauts from the shuttle Endeavour complete the first of five spacewalks at the International Space Station.

UK set to take back Brazil waste
The UK is working with Brazilian authorities to organise the return of more than 1,400 tonnes of British toxic waste.

Clinton in US-India climate plea
Visiting US Secretary of State Hillary Clinton says she hopes the US and India can tackle climate change together.

San Diego menaced by jumbo squid
Scuba divers off the Californian city of San Diego report unnerving encounters with large numbers of Humboldt squid.

India Moon probe 'malfunctions'
India's first mission to the Moon suffers from a technical problem, space research officials in India say.

Thalidomide lung cancer 'failure'
Controversial drug thalidomide does not improve survival for patients with a form of lung cancer, a study finds.

Shipping emissions plan 'stalls'
Plans to reduce rising emissions from global shipping have faltered at a key international meeting.

Retailers miss plastic bag target
Supermarkets almost halve the number of plastic bags given to customers, just missing a voluntary target.

Element 112 named in honour of Nicolaus Copernicus
The latest addition to the Periodic Table is named after an astronomer who "changed our view of the world".

Future headache
Is the UK's nuclear waste strategy in jeopardy?

Steady hands
A unique exercise - how to dismantle a nuclear bomb

Fuel-cell legacy
The push space has given to tomorrow's power plants

False positive
What this image tells us about screening terrorists

Home energy saving pays its way
Why a "pay as you save" scheme could be the most feasible way to encourage people to cut their energy consumption.

Do tiger farms earn their stripes?
Senior tiger investigator Debbie Banks on a thriving black market for tigers, and why farming the animals does not help.

Indian tiger park 'has no tigers'
One of India's main tiger parks admits it no longer has any tigers.

Cheetahs put through paces
Scientists try to discover what makes cheetahs so fast.

Ex-astronaut Bolden to lead Nasa
The US Senate has confirmed Charles Bolden as the new administrator of the American space agency (Nasa).

Killer parasites' genes decoded
Scientists have decoded the genetic blueprint of a parasitic worm responsible for thousands of deaths worldwide every year.

Men emerge from Mars test
Six volunteers emerge after spending three months in a capsule designed to test the isolation of a trip to Mars.

Low carbon way 'to reshape lives'
Generating one third of electricity from renewables by 2020 is central to the UK government's low carbon initiative.

Probe hints at past Venus ocean
A European probe at Venus returns infrared maps that hint at the idea of an ocean on its surface in the distant past.

Cave record of Britain's pioneers
Cheddar Gorge is shown to be one of the first places ancient Britons re-colonised towards the end of the last Ice Age.

UN tackles 'climate harm' ships
The UN discusses rules aimed at cutting the emission of greenhouse gases from shipping.

Tagging technology to track trash
Thousands of pieces of rubbish are to be tracked using sophisticated mobile tags to help reduce household waste.