BrainStuff Classics: Why Don't Evergreen Trees Lose Their Needles?

Evergreens' needles are their leaves, so why don't they change color and drop in the fall? Learn how evergreen leaves work in this classic episode of BrainStuff, based on this article: https://home.howstuffworks.com/evergreen-trees-dont-shed.htm

BrainStuff Classics: How Do Cold-Blooded Animals Survive the Winter?

Reptiles and amphibians have all sorts of adaptations for surviving cold weather, even in places where temperatures dip below freezing. Learn how they manage the cold in this classic episode of BrainStuff.

How Did Transcendentalism Shape America?

Transcendentalism was a philosophical movement in the 1800s that has had lasting effects in American society. Learn how it worked in this episode of BrainStuff, based on this article: https://history.howstuffworks.com/historical-events/transcendentalism.htm

How Can We Help Prevent Suicide?

Suidice is a serious public health issue in the U.S., but there are lots of things we can do about it. Learn how communities and individuals can help in this episode of BrainStuff, based on this article: https://health.howstuffworks.com/mental-health/mental-disorders/us-needs-to-have-ongoing-conver…

Which of Today's Animals Lived Alongside Dinosaurs?

When the non-avian dinosaurs died out, a lot of other animals went with them -- but some sturdy species survived. Learn how they evolved and thrived in this episode of BrainStuff, based on this article: https://science.howstuffworks.com/environmental/earth/geology/dinosaur-contemporary.htm

How Has Honey Been Used in Warfare?

Ancient armies set traps of hallucinogenic honey and mead to incapacitate their enemies. Learn how mad honey works in this episode of BrainStuff, based on this article: https://history.howstuffworks.com/historical-events/history-hallucinogenic-mad-honey-warfare.htm

What Happens During a Supernova?

Supernovae are the spectacular deaths of giant stars -- and they create the elements that make up our universe. Learn how they work and what we learn from them in this episode of BrainStuff, based on this article: https://science.howstuffworks.com/supernova.htm/printable

Why Does Poison Ivy Cause a Rash?

Poison ivy isn't poisonous -- it causes an allergic reaction that can take days to appear. Learn about poison ivy and how to avoid it in today's episode of BrainStuff, based on this article: https://science.howstuffworks.com/life/botany/poison-ivy.htm/printable

What's the History of Frozen Dinners?

Frozen meals have become a near-daily part of many people's lives in less than a century. Learn how refrigeration, food science, and television came together to make frozen foods a thing in today's episode of BrainStuff, based on this article: https://recipes.howstuffworks.com/menus/history-tv-dinn…

How Do We Build Tunnels Underwater?

It's relatively common for cars and trains to pass through underwater tunnels, but these structures are marvels of modern engineering. Learn how they're blasted, bored, and built from prefab pieces in today's episode of BrainStuff, based on this article: https://science.howstuffworks.com/engineerin…