Science Podcasts

Ask the Naked Scientists episode

Thu, 26th Aug 2010

Why are Cacti so Spiky?

Many species of cactus have long, sharp spines (c) Jon Sullivan

On Ask the Naked Scientists this week, we find out how cacti can survive with very little water, and why they are so well endowed with spines!  We answer your questions on asteroids, the size of the universe and the correct angle to leave the Earth.  Plus, we test Dave's knowledge of anti-ageing cosmetics!

Listen Now    Download as mp3

 

Multimedia

Subscribe Free

Related Content

Not working please enable javascript
EPSRC
Powered by UKfast
STFC
Genetics Society
ipDTL