1:16

TIL: Why Is the Ocean Salty? | Today I Learned

National Geographic

1:20

TIL: From Fleece Jackets to Your Food: The Scary Journey of Microplastics | Today I Learned

National Geographic

1:00

TIL: The World’s Largest Migration Isn’t What You Think | Today I Learned

National Geographic

1:47

TIL: That's No Moon. It's Aliens. (Maybe.) | Today I Learned

National Geographic

0:56

TIL: If You Like Tequila, You Should Love Bats. Here’s Why. | Today I Learned

National Geographic

0:46

TIL: These White Sand Beaches Aren’t What You Think | Today I Learned

National Geographic

0:48

TIL: Nuclear Waste Could Power the World for 72 Years | Today I Learned

National Geographic

0:59

TIL: Some Sharks Can Glow In The Dark | Today I Learned

National Geographic

1:23

TIL: We Have Lost 50% of Wildlife Since 1970 | Today I Learned

National Geographic

1:09

TIL: Vultures Have to Eat Animals Butt-First | Today I Learned

National Geographic

1:07

TIL: How Chameleons Change Color | Today I Learned

National Geographic

1:59

TIL: You Might Be Related to Genghis Khan | Today I Learned

National Geographic

1:15

TIL: Archaeologists Are Coming for Your Trash | Today I Learned

National Geographic

1:13

TIL: This Wasp Turns Prey Into Zombies | Today I Learned

National Geographic

1:04

TIL: Why Your Brain is Wrinkly | Today I Learned

National Geographic

1:24

TIL: Dinosaurs May Have Danced Like Birds | Today I Learned

National Geographic

2:37

TIL: We Waste One-Third of Food Worldwide | Today I Learned

National Geographic

1:34

TIL: Female Lions Are Attracted to Black Manes | Today I Learned

National Geographic

1:13

TIL: 20% of Our Oxygen Comes From a Bacteria | Today I Learned

National Geographic

1:27

TIL: Why Do These Birds Eat Dirt? | Today I Learned

National Geographic

1:29

TIL: Cicadas Can Damage Your Hearing | Today I Learned

National Geographic

1:06

TIL: Mount St. Helens Has a Baby Volcano Inside It | Today I Learned

National Geographic

1:24

TIL: There's Probably a Raccoon Living on Every City Block in North America | Today I Learned

National Geographic

1:27

TIL: You Can Smell Through Your Skin | Today I Learned

National Geographic

1:22

TIL: A Bumblebee's Buzz Is Basically a Superpower | Today I Learned

National Geographic

1:30

TIL: Cairo’s “Garbage People” Farm Their City's Trash | Today I Learned

National Geographic

1:34

TIL: A Venomous Animal May Save Your Life | Today I Learned

National Geographic

1:14

TIL: Orangutans Build Comfy Nests to Sleep in | Today I Learned

National Geographic

1:25

TIL: Female Lions Synchronize Their “Periods” | Today I Learned

National Geographic

1:43

TIL: Bees Could Help Save Elephants—By Scaring Them | Today I Learned

National Geographic

1:33

TIL: The B in BASE Jump Doesn't Stand for Badass (Amazing Footage) | Today I Learned

National Geographic

1:34

TIL: Lionfish Jewelry Can Help Save the Ocean | Today I Learned

National Geographic

1:31

TIL: Hummingbirds Are the World's Hungriest Birds | Today I Learned

National Geographic

1:32

TIL: Life Could Exist on Mars Thanks to Methane | Today I Learned

National Geographic

2:06

TIL: Choosing a Mars Landing Spot is Harder Than You Think | Today I Learned

National Geographic

2:27

TIL: We Could Give Mars Our "Cooties" | Today I Learned

National Geographic

2:21

TIL: Why Mars's Ocean Disappeared | Today I Learned

National Geographic

3:52

TIL: How to Transform Mars into Our Second Home | Today I Learned

National Geographic

1:53

TIL: Whale Poop Freshens Our Air | Today I Learned

National Geographic

2:25

TIL: How Cookiecutter Sharks Eat Is Terrifying (Explained With Cookies) | Today I Learned

National Geographic

1:57

TIL: King Cobras Are Cannibals | Today I Learned

National Geographic

1:39

TIL: This Volcano Has Erupted Almost Every Hour For 94 Years | Today I Learned

National Geographic

2:33

TIL: How to Play Matchmaker for Beautiful, Endangered Birds | Today I Learned

National Geographic

1:52

TIL: Wild Lions Live in India | Today I Learned

National Geographic

2:00

TIL: Almost 40 Percent of New Yorkers Are Immigrants | Today I Learned

National Geographic

2:27

TIL: These Spiny Sea Creatures Can Regrow Lost Body Parts | Today I Learned

National Geographic

2:13

TIL: Why Do These Monkeys Have Big, Colorful Butts? | Today I Learned

National Geographic

2:08

TIL: These Birds Trick Others Into Raising Their Gigantic Kids | Today I Learned

National Geographic