Some in the scientific community are questioning whether more than a decade of research on the international space station has been worth the $100bn price tag.

Pictures from the International Space Station show Hurricane Isaac covering a vast area of the Gulf of Mexico as it pummels New Orleans with strong winds and heavy rain.

Outside the International Space Station, two Russian cosmonauts are carrying out a spacewalk during which they will install shields to protect the structure from space debris.

An international mission to rescue a sick US citizen working at a research centre in the Antarctic is under way.

Nasa selects three companies to help develop launch systems that can take people to the International Space Station.

The earliest unambiguous evidence for modern human behaviour is discovered by an international team of researchers in a South African cave.

Cutting back on salty foods such as bacon, bread and breakfast cereals could reduce people's risk of developing stomach cancer, according to the World Cancer Research Fund (WCRF).

A Japanese rocket has blasted off to deliver an unmanned supplies vessel to the International Space Station.

A Russian rocket carrying a three-man crew has docked with the International Space Station.

A Russian-made Soyuz rocket has blasted off from Kazakhstan with three crew members, heading to the International Space Station.

A Russian Soyuz rocket carrying a three-man crew successfully launches to dock with the International Space Station.

An attempt to take whale conservation to the UN General Assembly fails at the International Whaling Commission after criticism from hunting nations.

Worms that took a ride on the International Space Station show genetic changes associated with longer lifetimes in worms on Earth.

Shipping lanes around the Panama Canal are likely to be constrained in order to protect whales, it emerges at the International Whaling Commission meeting.

A controversial vote at the International Whaling Commission meeting renews whaling quotas for indigenous groups in Alaska, Russia and the Caribbean.

A proposal to declare almost all of the southern Atlantic Ocean a whale sanctuary is defeated at the International Whaling Commission's annual meeting.

The annual meeting of the International Whaling Commission this time is focusing on hunting by indigenous groups mainly in the Arctic.

An international team of scientists has generated the first laser-like beams of X-rays from a tabletop device.

Astronauts on board the International Space Station have released the unmanned Dragon cargo capsule.

The private Dragon cargo capsule is set to return to Earth on Thursday having spent a week attached to the International Space Station.

A lake in Cambridgeshire has been at the centre of international interest after what was claimed to be a unique species of fish was caught there.

Public mistrust of the Big Six energy firms may undermine government plans for its planned Green Deal, according to the International Energy Agency.

The International Energy Agency has infuriated environmentalists with a report on what it calls the "golden age" of gas.

The California SpaceX company has seen its unmanned Dragon cargo ship attach successfully to the International Space Station (ISS) for the first time.

The SpaceX company's Dragon cargo capsule is expected to join up with the International Space Station in the coming hours - the first ever private vehicle to do so.

The US firm SpaceX aborts the lift-off of its Falcon rocket and Dragon ship to the International Space Station.

A Soyuz spacecraft has successfully docked with the International Space Station.

Magnet-making bacteria may be building biological computers of the future, an international team of researchers says.

An intimate look at what campaign group Survival International calls the world's most endangered tribe

A "miniature honeycomb" - or scaffold - could encourage nerves to grow in order to repair damage, according to an international group of researchers.