YouTube: Eyes have been around for a long time, like... half a billion years or so... and in that time, animals have evolved lots of crazy and amazing ways to observe the world around them!
dannym3141says...

Nerd detail: Light is only partially polarised after reflecting. Complete polarisation happens only at a specific angle depending on what it reflects off.

articiansays...

I'd watch so much more of this show if I didn't have to worry about that guys stupid hair highlight burning an after-image onto one of my monitors.

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