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Environmental campaigners are taking Norway to court over drilling in the Arctic.

Modern agriculture and consumption patterns have devalued around 40% of global lands, according to the UN.

The Central Africa Republic is one of the world's poorest countries, and is a close Russian ally.

The knee uses a built-in computer to control the swing of the knee and help the user walk more naturally.

Why do people with certain professions and interests make us yawn – even before we get to know them?

Oyster sauce is a much-loved ingredient of the Chinese dinner table. How is it made, and why is it so irresistible?

The accident occurred when a temple chariot touched a high-transmission live wire in Tamil Nadu.

Turning TVs, games consoles and chargers off at the wall when not in use could help combat price rises, British Gas says.

Moscow says 'unfriendly' countries must start paying for its gas in roubles.

Since the billionaire struck a deal to buy the site, there's been intense speculation over what the future holds.

Ukraine is pushing up prices of commodities including food, cotton and energy, the World Bank says.

The stone head the Canaanite goddess of beauty, love and war is unearthed in a Khan Younis field.

A catalogue of errors appears to have led to the sinking of a boat carrying sightseers off northern Japan.

Soaring gas prices have increased demand for more energy-efficient, eco-friendly homes.

Across large swaths of North America, an ancient fruit is growing wild but largely forgotten. However, a community of foodies, farmers and scientists is eagerly trying to change that.

Chagas disease causes misery in poor communities around the world, and may lead to 10,000 deaths a year. Health workers are trying new methods to ease suffering.

Politicians and scientists say they were duped by an organisation making false claims about global warming.

Mr Musk, who made the shock bid just over a week ago, said he would "unlock" the social media firm's potential.

Switching to futuristic foods will reduce carbon emissions and save land and water, a study suggests.

Kane Tanaka was born in 1903, the same year as George Orwell and when Roosevelt was US president.

The former president will be fined $10,000 (£7,850) every day until he turns over requested files.

The machines allow the user to see both his or her reflection and a video of an online instructor.

The tug-of-war for talent continues as employers fight over candidates – yet not every applicant is a hot commodity.

Few mammals have the ability to regenerate a severed spinal cord or heal severe injuries, but a diminutive rodent from Africa could hold the key to a medical revolution.

An experiment to find out has just finished on the International Space Station.