› added 11 years ago

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TIL males produce 2 kinds of sperm - one that fertilizes the egg and one that defend the egg from other male sperm.

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YjZ7 TIL found roaming outside Canberra, Australia, Chris the sheep avoided shearing for years. The fleece was so massive, Chris could barely walk. It took five shearers 42 minutes to remove 89 pounds of wool, which set an (unofficial) world record for most wool.
LbR0 TIL that a solid 8 hour sleep is actually unnatural to us as a species. A 4 hour sleep, waking for 1-2 hours, followed by another 4 hour sleep is how we slept for the majority of evolution. The change to a solid 8 hour sleep was originally attributed to improvements in lighting and other things.
jPNp TIL brown eyes are actually blue under a layer of melanin
XEalR TIL: Rabbits, and other animals such as deer, have big white tails to confuse predators. A sharp turn will hide the "bullseye", confusing the pursuer.
0wDQR TIL that a woman in Florida surgically implanted a Disney World MagicBand into her arm. MagicBands are used at the parks to keep track of tickets, purchases, and room keys. Disney now puts a "not intended for subdermal use" warning on all their MagicBands.