How many types of spiders are there?

Big ones, small ones, cute ones, leggy ones. Is that the extent of your spider knowledge? Then this is the episode for you! We asked biologist Andrew Gordus of Johns Hopkins University to help us figure out how many types of spiders there are. 

Big ones, small ones, cute ones, leggy ones. Is that the extent of your spider knowledge? Then this is the episode for you! We asked biologist Andrew Gordus of Johns Hopkins University to help us figure out how many types of spiders there are. 
Got a question that’s just your type? Send it to us at BrainsOn.org/contact, and we’ll search the web for someone to answer it!

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Smash Boom Best is a debate show for kids and families from the makers of the award-winning podcast, Brains On! Every episode takes two cool things, smashes them together and lets you decide which is best.


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A history show for the whole family! Every episode explores the origin of just one thing — like sandwiches, video games, clocks and more — while teaching listeners to think critically about history.


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Our mission is to encourage kids’ and curious adults’ natural curiosity and wonder using science and history…but there’s no age limit on curiosity, and episodes of Brains On can be enjoyed by anyone.


How many types of spiders are there?

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