In TV & Radiofollow-up:
View archived Horizon programme summaries.
We are the AliensCould clouds of alien life forms sweeping through outer space infect planets
PandemicWhat if bird flu turns into a pandemic flu that sweeps across the globe?
The Great Robot RaceTwenty robot cars cross the Nevada desert without drivers or remote controls.
Human v2.0We are on the verge of creating a new type of human – a human v2.0.
The World's First Face TransplantIsabelle Dinoire received the world's first face transplant.
Chimps are People TooDanny Wallace investigates how similar chimps and people are.
Survivors Guide to Plane CrashesHow to improve your chances of surviving a plane crash.
Tutankhamun's FireballHow a team of scientists set out to solve the mystery of chunks of ancient glass scattered in a remote part of the Sahara Desert.
Nuclear NightmaresTo what extent is nuclear power's risky reputation deserved?
We Love CigarettesA day in the life of the planet's favourite vice.
Bye Bye Planet PlutoMeet the astronomers who think Pluto no longer deserves to be called a planet.
The Genius Sperm BankMeet the man who wanted to build a smarter generation.
The Woman who Thinks Like a CowTemple Grandin thinks her autism helps her understand how animals think.
Winning Gold in 2012Horizon investigates the scientific approach to sporting success. (No summary available)
Most of Our Universe is MissingWe know what 4% of the Universe is made of. But what about the rest?
The Lost City of New OrleansWhat went wrong and what can be done to rebuild New Orleans?
A War on ScienceThe theory of evolution is under attack from a controversial new idea called intelligent design. But is it science?
Waiting for a HeartbeatThe story of three women as they attempt to overcome the odds and give birth to a baby.
Space TouristsIs a space tourism revolution just around the corner?