Daniel and Kelly answer questions about how it can both be true that humans share 98.7% of their DNA with bonobos and that fraternal twins share 50% of their DNA, why black holes don't have color charges, and whether or not you could treat a fever or let it ride.

Listener questions #53
40:52

How did syphilis get to Europe?
43:38

What if dark matter is more complicated?
44:24