Polar bears diverged very recently
Joyce Park stashed this in Science
Polar bears evolved from brown bears less than 500,000 years ago. That's why they can still interbreed and produce pizzlies!
Why have I never heard of pizzlies before? Do I need to make this a factoid?
I had never heard of pizzlies until now!
First reaction: Pizzlies and other hybrids signify end of times.
Not the end of times, but the BEGINNING of new times.
Perhaps these are the critters who can survive climate change!