1926 Model T Snow Tractor

Check this out! This is a rare film of an invention that never went very far. Why? It's the 1926 Model T Snow Tractor.......You're not going believe this. This is a 1926 silent film of a tractor-snow-machine invented by Henry Ford, who is shown driving it. Watch the whole thing to see the full capabilities of this now extinct piece of brilliance. Why didn't it catch on? Is there a fatal flaw somewhere?

John Dybvig invites David Letterman to the 2011 Rugby World Cup

This is part II of John Dybvig's David Letterman trilogy - here he gets to the heart of what makes New Zealand tick!

John Dybvig explains New Zealand to David Letterman...

regular contributor John Dybvig shot this video, explaining New Zealand to David Letterman.

1080 poison does not kill crayfish

A look at the effect of 1080 poison on crayfish

Carl Sagan - Pale Blue Dot

From Carl Sagan's book, Pale Blue Dot. You won't believe how small the Earth is!

John Dybvig explains New Zealand to David Letterman...

regular contributor John Dybvig shot this video, explaining New Zealand to David Letterman.

1080 poison does not kill crayfish

A look at the effect of 1080 poison on crayfish

1926 Model T Snow Tractor

Check this out! This is a rare film of an invention that never went very far. Why? It's the 1926 Model T Snow Tractor.......You're not going believe this. This is a 1926 silent film of a tractor-snow-machine invented by Henry Ford, who is shown driving it. Watch the whole thing to see the full capabilities of this now extinct piece of brilliance. Why didn't it catch on? Is there a fatal flaw somewhere?

1080 poison helping New Zealand bats

Rat-carried plagues are are causing bat populations to dwindle. Dr Colin O'Donnell explains how biodegradable 1080 poison protects bats on a scale unmatched by rat trapping.

Leigh Harts Mysterious Planet Preview

Leigh Hart is out to solve the world's great mysteries starting with Stonehenge...