BBC

Astronomers are observing a rare event, a transit of the planet Mercury.

Land speed record holder Andy Green finally gets to drive the Bloodhound car across the Kalahari.

The rare hoiho becomes the first penguin to take the title, after two weeks of "memes and trash-talk".

Cutting the speed of ships by 20% can benefit health, protect whales and limit warming, say campaigners.

A British Airways insider says the industry deliberately fills planes with extra fuel to save costs.

The man behind a key amendment to a major climate treaty thinks that he has a way to cool the Earth.

Engineers think they understand why a heat sensor has been playing up on the superfast desert vehicle.

The British supercar cuts short its latest run because of temperature concerns but still clocks 481mph.

Scientists say the decline of Arctic sea ice is connected to the spread of disease among marine mammals.

Marc Raibert tells BBC News he nudged his daughter over just to work out how people balance.

The BBC met the driver of Bloodhound - part racing car and part spaceship - during testing in South Africa.

The UK-led challenge to the land speed record clocks 501mph in the Kalahari Desert of South Africa.

Co-leader Sian Berry urges £100bn a year to be spent on climate action at the party's campaign launch.

Fossils of a newly-discovered ancient ape could give clues to how walking on two feet evolved.

The aerospace giant unveils its proposal for a lander that could take humans to the lunar surface.

The Royal Academy of Engineering wants to demolish stereotypes and attract more women to the industry.

Lawyers say police now face claims for false imprisonment from "potentially hundreds" of protesters.

Scientists say we are close to making fusion power a reality - but will it arrive in time to combat climate change?

Here's a look at how some of the UK's biggest tea brands are trying to tackle the plastic problem.

Polling suggests the environment is one of three key issues for voters - but by the end of the campaign will politicians be answering their questions?