Why Do We Dream?

And are machines better than humans when it comes to recognising faces?

• 26 mins

Can Anything Travel Faster Than Light?

Plus, how can we measure the age of the Universe?

• 26 mins

What’s the Tiniest Dinosaur?

And how do bats differentiate their own echolocation signals?

• 26 mins

Killing Insects: The Rights and Wrongs

Killing Insects for Conservation

Killing insects in the name of research upsets some people. How do scientists justify it?

• 26 mins

Killing Insects: The Rights and Wrongs

Do Insects Feel Pain?

Do insects experience pain and suffering?

• 26 mins

The Second Genome

Manipulating Our Hidden Half

New research into manipulating our microbiome to stay healthy and beat chronic disease

• 26 mins

The Second Genome

Dirt and Development

How the microbes in us set us on a path of health or chronic disease

• 26 mins

The Second Genome

Gateway to the Mind

Could our microbiome have an influence on our mood and behaviour?

• 26 mins

A Tale of Two Axolotls

The Aztec Salamander

Saving a cultural icon and biomedical marvel from extinction.

• 26 mins

A Tale of Two Axolotls

The Nun’s Salamander

Why are Mexican nuns breeding a rare salamander? Could they save this remarkable species?

• 26 mins

Science Stories: Series 6

The Real Cyrano de Bergerac

Philip Ball on the real Cyrano de Bergerac and his 17th century space ship.

• 26 mins

Science Stories: Series 6

Making Natural Products in the Lab

How 19th century chemist Wohler made a natural product in the lab

• 26 mins

Science Stories: Series 6

Descartes' "Daughter"

Philip Ball goes back to the 17th Century to talk about Descartes and his "daughter"

• 26 mins

Science Stories: Series 6

Hypatia: The Murdered Mathematician

Naomi Alderman on the life and death of Hypatia, the ancient Greek mathematician

• 26 mins

Science Stories: Series 6

Mary Anning and Fossil Hunting

How a poor woman became one of 19th-century Britain's most successful fossil finders

• 26 mins

In Their Element

Fluorine

How the feared element ended up giving us better teeth, mood and health

• 26 mins

In Their Element

Iron

How iron has shaped human biology and culture

• 26 mins

In Their Element

Sodium

Why sodium powers everything we do

• 26 mins

Heatwave

The Long Hot Summer

Roland Pease asks why the Northern Hemisphere had unusually high temperatures this year.

• 26 mins

Heatwave

The Long Hot Summer - Part Two

How did mild temperatures in the Arctic affect 2018's extreme weather?

• 26 mins

China's Organ Transplants

Who To Believe?

Matthew Hill explores the Chinese approach to organ transplantation.

• 26 mins

China's Organ Transplants

Tourism and Transparency

Matthew Hill explores the Chinese approach to organ transplantation.

• 26 mins

Cooling the City

How can we adapt and prepare our cities for extreme weather conditions?

• 26 mins

Tracking the First Animals on Earth

In search of the first animals on the Earth, more than half a billion years ago

• 26 mins

The Genius of Accidents

Viagra and CRISPR

Viagra was first developed to treat heart disease, but it had some surprising side-effects

• 26 mins

The Genius of Accidents

The Big Bang and Jet Streams

Evidence for the big bang was initially thought to be a mistake in the data

• 26 mins

The Genius of Accidents

Finding the Coelacanths

A huge, four-limbed fish, was discovered 65 million years after its supposed extinction

• 26 mins

Plastic Fantastic

Why We Fell In Love with Plastic

Professor Mark Miodownik explores our love/hate relationship with plastic.

• 26 mins

Plastic Fantastic

How Much Plastic Can We Recycle?

Professor Mark Miodownik explores our love/hate relationship with plastic.

• 26 mins

Plastic Fantastic

The China Syndrome

China's ban on importing other countries' waste plastic is having a big impact

• 26 mins