BBC

The teen climate change activist arrives in New York City after a 15-day trip across the Atlantic Ocean on a solar-powered boat.

The successor to the famous Hubble Space Telescope reaches a key milestone in its construction.

The discovery of an ancient skull in Ethiopia underlines the complexity in the evolution of humans.

The 16-year-old campaigner arrives in the US after sailing for two weeks across the Atlantic.

In the fractious climate debate, criticism of young activists has sometimes spiralled into abuse.

Fossil fuel burning is the big issue but continued forest cover loss will make climate targets harder to achieve, say scientists.

The plea from the governors comes after a spat between President Bolsonaro and the French president.

The Californian rocket company demonstrates its new methane-burning engine in Texas.

Plastic carrier bags were made illegal, so how has the government enforced the ban?

If you rule out everything made by fire, we would not be left with much of an economy at all.

President Bolsonaro demands an apology from his French counterpart for calling him a liar.

The international wildlife regulator bans the capture and export of baby African elephants.

Insect-based foods may be better for pets than prime steak, according to the British Veterinary Association.

The body representing UK vets says pet food diets based on insects are a 'fantastic opportunity'.

Engineers in Stevenage, UK, finish building a robot that will search for life on the Red Planet.

The mass of pumice, the size of Manhattan, is believed to come from an underwater volcano near Tonga.

Two sailors recall their encounter with a vast sea of floating volcanic rocks in the Pacific Ocean.

That annoying buzz we all recognise from summer evenings is actually a love song for a mosquito.

President Donald Trump reportedly suggested bombing hurricanes before they made landfall.

In the coming decade, billions could face a critical shortage of water. Here's what we can do about it.