Ted-Ed

Claws vs. nails - Matthew Borths

A day in the life of a teenager in medieval Baghdad - Birte Kristiansen and Petra Sijpesteijn

How sugar affects the brain - Nicole Avena

How to make a mummy - Len Bloch

How do animals regrow their limbs? And why can't humans do it? - Jessica Whited

What causes constipation? - Heba Shaheed

What would happen if you didn’t sleep? - Claudia Aguirre

What sex ed doesn’t tell you about your brain - Shannon Odell

What really happened to Oedipus? - Stephen Esposito

The biggest mistakes in mapmaking history - Kayla Wolf

5 tips to improve your critical thinking - Samantha Agoos

History’s deadliest colors - J. V. Maranto

Why can't you divide by zero? - TED-Ed

What caused the French Revolution? - Tom Mullaney

Mansa Musa, one of the wealthiest people who ever lived - Jessica Smith

What is bipolar disorder? - Helen M. Farrell

How do vitamins work? - Ginnie Trinh Nguyen

How to practice effectively...for just about anything - Annie Bosler and Don Greene

Is it normal to talk to yourself?

Why are cockroaches so hard to kill? - Ameya Gondhalekar

The science of laughter - Sasha Winkler

The benefits of a good night's sleep - Shai Marcu

What makes something 'Kafkaesque'? - Noah Tavlin

Why do we dream? - Amy Adkins