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Keeping Los Angeles hydrated

How Los Angeles gets its water supply, despite being in a near-desert region

• 24 mins

Water pollution in Lagos

How Nigeria's growing population is placing a strain on its clean water supply

• 25 mins

Lost Continents - India

How the subcontinent was formed - the story of the Indian land mass

• 24 mins

Lost Continents - Ocean

How an entire ocean vanished, when the European continent was formed

• 24 mins

Lost Continents - First Continent

The search for the first continent

• 24 mins

Lost Continents - Africa

How the continent of Africa split apart to form a new ocean

• 24 mins

Sacred Showdown - the science of belief

For centuries science and religion have not been on speaking terms

• 24 mins

Sacred Showdown - near-death experiences

A look at how scientists have attempted to explain near-death experiences and spirituality

• 24 mins

Sacred Showdown - human reproduction

What have been the advances made in engineering human reproduction by scientists?

• 24 mins

Anthropology - the angry anthropologist

First in a series examining the discipline of social anthropology

• 24 mins

Anthropology - the early anthropologist

Second in a series examining the discipline of social anthropology

• 23 mins

Anthropology - the modern world

Social anthropology - how human beings behave in social groups

• 25 mins

Robots - part one

An investigation into the robots of tomorrow

• 24 mins

Robots - part two

Second in a series on the robots of tomorrow, robots designed to work with people

• 24 mins

Robots - part three

An investigation into robots of tomorrow, designed to work with people

• 24 mins

Robots - part four

An investigation into the robots of the future

• 23 mins

The Hubble Telescope and the first stars

Tracking down the first stars using Hubble space telescope

• 23 mins

Solar Neutrinos

The problematic elementary particles which have to investigated deep underground

• 23 mins

First Technology - crops

How the Neolithic revolution changed the course of mankind's future

• 23 mins

The demise of the big animals

What caused the extinction of some of the world's largest mammals, some 15,000 years ago?

• 25 mins

First Technology - man's best friend

The domestication of animals and how the partnership helped man evolve

• 23 mins

First Technology - pottery

Humans are the only creatures to have mastered the use of fire

• 23 mins

First Technology - metals

How the manipulation of metals 10,000 years ago helped our ancestors

• 23 mins

Living beyond our means

Are we asking more of nature than it can provide?

• 23 mins

Why elephants never forget

A report on how elephants use their sixth 'seismic' sense

• 23 mins

How much can we trust scientists?

Controversy over research on genetically modified maize in Mexico

• 23 mins

Strange Senses

A report on the theory that animals can sense the Earth's magnetic field

• 23 mins

Saving the brain

How advances in surgery are helping those with brain injuries or tumours

• 23 mins

Disaster Reconstruction - Turkey

A look at the reconstruction after the aftermath of the Izmit earthquake in 1999

• 23 mins

Disaster Reconstruction - London

The programme looks at how a gas explosion killed five people in Newham, east London

• 23 mins