TED-Ed

Can you solve the birthday cake riddle? - Marie Brodsky

The tragic myth of the Sun God's son - Iseult Gillespie

Why do cats have vertical pupils? - Emma Bryce

Why is it so hard to escape poverty? - Ann-Helén Bay

The myth of Loki’s monstrous children - Iseult Gillespie

Why is the Mona Lisa so famous? - Noah Charney

Blood, concrete, and dynamite: Building the Hoover Dam - Alex Gendler

You can only save one— who do you choose? - Doug MacKay

The dark history of Mount Rushmore - Ned Blackhawk and Jeffrey D. Means

Would you raise the bird that murdered your children? - Steve Rothstein

How one of the most profitable companies in history rose to power - Adam Clulow

Yes, scientists are actually building an elevator to space - Fabio Pacucci

Can stereotypes ever be good? - Sheila Marie Orfano and Densho

Why do your jeans wear out so quickly? - Madhavi Venkatesan

The wild sex lives of marine creatures - Luka Seamus Wright

Can you solve the human cannonball riddle? - Alex Rosenthal

Nature's fortress: How cacti keep water in and predators out - Lucas C. Majure

How to make a sad story funny - Jodie Houlston-Lau

The twins who tricked the Maya gods of death - Ilan Stavans

Why do some people snore so loudly? - Alayna Vaughan

Just add water: The garden insect that can turn into a plague - Jeffrey A. Lockwood

How to get better at video games, according to babies - Brian Christian

The Norse myth that inspired “The Lord of the Rings” - Iseult Gillespie

The surprisingly long history of electric cars - Daniel Sperling and Gil Tal