BBC

Volcan de Fuego sent ash over a mile into the sky.

Controlling machines using thought can be used in medicine, gaming, transport and many other sectors.

High-tech tracking collars on polar bears reveal a growing Arctic struggle, say scientists.

Tracking collars on female polar bears measure the animals' struggle to find food on diminishing Arctic ice.

Researchers have discovered that salmon from the chalk streams of southern England are genetically unique.

While the US suffers an overdose epidemic, most of the world misses out on painkillers.

It's 15 years since disaster struck as the Columbia returned to Earth following a research mission.

Xavier Bettel is at Cape Canaveral in Florida to see his nation's latest space project go into orbit.

The move by Hong Kong's lawmakers is hailed by campaigners as "a lifeline for elephants".

Eyes around the globe have been turning to the skies to view the lunar event.

A killer whale is taught to mimic words such as "hello" and "bye bye" in a scientific experiment.

Arizona-based company Alcor offers cryonic preservation in the hope of reviving you in the future.

A lunar eclipse, supermoon and blue moon are about to happen at once. Here's what you need to know.

A blue blood supermoon and lunar eclipse across Asia heralds a year of lunar science milestones, say scientists.

Lobsters and crabs are sentient organisms that feel pain and need more protection, say campaigners.

A killer whale that can mimic words such as "hello" is thought to be the first of its kind to copy human speech.

Jasmine Ahumada, from California, attaches spiders and bees to her face to create her distinctive looks.

Starlings take to the skies to create a spectacular aerial ballet before settling on roost.

Burning wood and coal in people's homes will come under scrutiny as part of a government drive to improve air pollution.

As more media outlets use automated algorithms to write news stories, are journalists doomed?