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Geoengineering

Can putting chemicals in the stratosphere to block the sun stop global warming?

• 26 mins

Chronotypes

Why are some people 'early birds' while others are 'night owls'?

• 26 mins

Fixing Nitrogen

What are alternatives to the process that takes nitrogen from the air to make fertilizer?

• 26 mins

Saving the Oceans - Part One

Tackling the problems of population and rising seas for the Pacific islands of Kirabati

• 26 mins

Saving the Oceans - Part Two

Saving sharks and snails in the Pacific using modern technology and traditional practice

• 26 mins

Saving the Oceans - Part Three

Commercial fishing鈥檚 impact on bird evolution, and the threat of coral eating starfish

• 26 mins

Saving the Oceans - Part Four

Aboriginal knowledge and modern science helps to preserve Australia鈥檚 marine ecology

• 26 mins

Show me the Way to Go Home

How animals navigate, from homing instincts to smell maps and astronomy

• 26 mins

Hack my Hearing

Can hacking hearing aids create a new super sense for people with hearing loss?

• 26 mins

Fructose: the Bittersweet Sugar

Is fructose a 'toxic additive' or a healthy fruit sugar?

• 26 mins

The Biology of Freedom

Is free will unique to humans or a biological trait that evolved over time?

• 26 mins

Inside the Shark's Mind

Can science stop sharks attacking humans?

• 26 mins

Vikram Patel

Jim al-Khalili discusses global mental health with psychiatrist Professor Vikram Patel

• 26 mins

Peter Higgs

Peter Higgs opens up to Jim Al-Khalili about the Higgs boson.

• 26 mins

Whatever Happened to Biofuels?

Can we make biofuels from the sugars in the inedible parts of plants?

• 26 mins

Whatever Happened to Biofuels - Part Two

Gaia Vince asks if we can ever run our vehicles on biofuels from algae or bacteria.

• 26 mins

Sue Black

Forensic scientist Sue Black on the clues she uses to identify human bodies

• 26 mins

Mark Miodownik

Mark Miodownik talks nuclear weapons, 3D printers and smart materials with Jim Al-Khalili.

• 26 mins

Alf Adams

Alf Adams remembers his small idea that changed the world, with Jim Al-Khalili.

• 26 mins

Beauty and the Brain

Dr Tiffany Jenkins explores what neuroscience knows about art

• 26 mins

Taming the Sun

ITER, the world's effort to harness nuclear fusion, and the most complex experiment ever

• 26 mins

Driverless Cars

The future cars with sensors that can send messages to other cars, trucks and pedestrians

• 26 mins

Driverless Cars

The engineers inventing vehicles that drive themselves

• 26 mins

Ageing and the Brain

Do our mental powers really decline in old age?

• 26 mins

Janet Hemingway

Janet Hemingway on malaria and the coming of insecticide resistance with Jim al-Khalili

• 26 mins

Anaesthesia

How do general anaesthetics work in the body?

• 26 mins

Swarming Robots

Adam Hart on how insect and cell structure research is helping develop swarming robots

• 26 mins

What has Happened to El Nino?

What is making this year鈥檚 predicted El Nino so hard to forecast?

• 26 mins

Professor Sir Michael Rutter

Child psychiatrist Sir Michael Rutter influenced understanding of autism and behaviour

• 26 mins

Rosetta Mission Arriving At Comet

Orbiting and landing on a comet. The most daring science space mission ever?

• 26 mins