BBC

Sergei and Yulia Skripal were poisoned by Novichok nerve agents, the PM says. So what are they?

The organisation keeping track of the deadly chemicals held by countries around the world.

Three pioneers who are shattering stereotypes surrounding the world of science and engineering.

Meet the "mudlarkers" looking for archaeological artefacts along the banks of the Thames.

The "confident and curious" cub was born at Highland Wildlife Park in Kincraig, Scotland.

As the fight against plastic pollution gains momentum, firms are tackling the issue in different ways.

In the first of our Future of Work series, we look at how new tech could change our working lives.

New evidence from Kenya suggests that local climate change drove early human innovation.

How Stephen Hawking used his recognition to highlight challenges and existential threats for humanity.

Petrol and diesel cars must be phased out earlier than the 2040 target, four Commons committees say.

The physicist will be remembered mainly for three things, says fellow scientist Maggie Aderin-Pocock.

A new study shows that the atmospheric carbon levels projected by 2060 will affect coral reefs.

Listen to five thought-provoking perspectives from world renowned physicist Stephen Hawking, who has died at the age of 76.

A short history of A Brief History of Time - Hawking's blockbuster.

Science aside, Stephen Hawking appeared in a number of hit television shows.

Remembering some of the key theories and quotes of the world renowned physicist, who has died.

Colleagues of the visionary physicist Stephen Hawking say he left a unique legacy.

From being diagnosed with a life-threatening disease at 21 to experiencing zero-gravity.

The physicist, who battled motor neurone disease for most of his life, has died at the age of 76.

From meeting presidents to popes, we look back at some of Professor Hawking's most notable public appearances.