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How Many Trees Are There?
S4 E78 / 4m 15s
It may be an impossible questions, but we can at least get close.
Join Joe Hanson as he explores curiosity and illuminates the science behind… well, everything.
Video description: I'm scared of spiders. I'm not afraid to admit it. I love them in a scientific sense, or from a "let me look at you from way over here" sense, but that's as close as I get. Here's a look at the science of why some of us are afraid of spiders, snakes, roaches, and other creepy crawlies. Did I evolve to be this way, or did I learn to be afraid of them? It seems to be an open question