Why do we knock on wood?

Chances are you’ve knocked on wood in the past month. But, really, why? Here’s one origin story: Knocking on wood is thought to come from the folklore of the ancient Indo-Europeans, or possibly people who predated them, who believed that [...]

4 TED-Ed Lessons about mental health

Depression, bipolar disorder, OCD, narcissism — these medical conditions impact millions of people around the world, yet are often misunderstood. How much do you know about the symptoms and treatments? Want to learn more about how to support a friend [...]

Ode to my daughter’s teacher

When I was diagnosed with breast cancer in 2013, my kids were 6 and 3 years old. There are so many things that go through your mind when you’re diagnosed with cancer. The biggest concern for me, though, was how [...]

Do entertain the animals: 5 ways to be a better human at the zoo

Your job: Be interesting. Researcher and author Laurel Braitman explains. Most humans at a zoo or aquarium are really predictable. We go up to the glass and wave, or pull out our phones and take a picture, and then wander off to [...]

7 tips for teachers on how to create a safe school environment

All children deserve to learn in a safe, supportive educational environment. One education organization working toward this goal is GLSEN, which aims “to create safe and affirming schools for all, regardless of sexual orientation, gender identity, or gender expression.” Below, [...]

11 electrifying facts about jellyfish

Some jellyfish are longer than a blue whale. Others are barely larger than a grain of sand. And one even contains a secret that’s behind some of the greatest breakthroughs in biology. To dive deeper into why jellyfish are such [...]