BBC

When it comes to love stories, what makes a great novel a classic rather than a guilty pleasure?

Relatives and co-workers live in fear after two monarch butterfly activists were found dead in Mexico.

Scientists say they have overturned the prevailing theory of how the planets in our Solar System formed.

Experts are developing a better knowledge of the brain by studying tissue left over from surgery.

Driver Andy Green describes what needs to be done to achieve a land speed record.

An expert identified the tiny gnats from tens of thousands of creatures caught in an insect trap.

The US space agency is looking for new astronauts to join future missions to the Moon and Mars.

The UK government's new business secretary will also lead this year's big UN climate meeting.

The US space agency reprocesses the Voyager probe's iconic "Pale Blue Dot" picture of Planet Earth.

The turtle is believed to have lived in northern South America between 13 and seven million years ago.

Christina Koch spent 328 days on the International Space Station and was part of the first all-female spacewalk.

Every person in the world is wasting about 500 calories of food a day, according to a new study.

A US research ship is the first vessel to encounter Antarctica's giant new iceberg.

An image of two mice fighting on the underground over a crumb of food tops a popular wildlife photo poll.

Refugees in Jordan and scientists from the UK are creating a way to grow fresh food from old mattresses.

The six-wheeled robot survives the simulated conditions it'll experience on the Red Planet.

Up to a fifth of the Amazon rainforest has become a net source of CO2, research suggests.

The fossils of the predator, which stood around 8ft (2.4m) tall, were found by a farmer in Alberta.

A new series will show how the forces of nature - such as the weather - affect animals and the planet

The natural world specimens are being temporarily removed to make way for new display cabinets.