Image for Red kangaroo

Red kangaroo

Duration: 02:25

Brian tracks one of Australia's most iconic animals - the kangaroo. It is the only large animal ever known to have moved around by hopping, and uses less energy the faster it goes.

Available since: Mon 11 Feb 2013

This clip is from

Wonders of Life Original Series, Size Matters

4/5 In this episode, Brian travels round Australia to explore the physics of the size of life.

First broadcast: 17 Feb 2013

Image for Size Matters Not currently available on BBC iPlayer

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.

Added. Check out your playlist Dismiss