Why are Cacti so Spiky?
Ask the Naked Scientists
English - August 26, 2010 23:00 - 25 minutes - 8.88 MB - ★★★★★ - 60 ratingsLife Sciences Science Natural Sciences science questions ask the naked scientists Homepage Download Apple Podcasts Google Podcasts Overcast Castro Pocket Casts RSS feed
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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! Like this podcast? Please help us by supporting the Naked Scientists