Horizon

2002-2003

The Day We Learned to Think

BBC Two

Duration: 50 minutes

First broadcast: Thu 20^th Feb 2003, 21:00 on BBC Two Northern Ireland (Analogue)Latest broadcast: Mon 3^rd Jul 2006, 10:30 on BBC Two England

A small piece of stone found in an African cave is threatening to rewrite human history. If the message it contains is true then one of the touchstones of evolutionary theory was based on a mistake. Show more

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Horizon

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Horizon: 2002-2003

Source: BBC Online

Horizon

2002-2003

The Day the Earth Nearly Died

BBC Two

Duration: 50 minutes

First broadcast: Thu 5^th Dec 2002, 21:00 on BBC Two Northern Ireland (Analogue)Latest broadcast: Sun 4^th Nov 2007, 20:00 on BBC Four

Documentary about palaeontologists who believe they have discovered what caused 95 per cent of life on Earth to be wiped out 250 million years ago. Show more

Horizon

2002-2003

Revisited: Dawn of the Dinosaurs

BBC Two

Duration: 10 minutes

First broadcast: Sun 4^th Nov 2007, 20:50 on BBC Four

An investigation into the theory that a comet was responsible for dinosaur extinction, followed by a look at the role of asteroid collisions in evolution. Show more