The Science Of Why Marijuana Makes Your Eyes Red

An animated marijuana grinder. The lid is hovering slightly over the instrument, revealing a pinch of marijuana.

Marijuana use is indelibly associated with red eyes — have you ever wondered why? In this animated short, Sophie Geyrosaga explains how marijuana consumption may temporarily affect the circulatory system, dilating blood vessels in the eyes to the point that they might appear to be bloodshot!

How Visible Light Affects the Human Body

The upper-left quadrant of a Shelly Suh's face. Her eye, eyebrow, and a lock of her hair are visible.

All life evolved under the sun — so it makes sense that the planet’s 24-hour light regime is deeply connected to human health. But how much does visible light affect our body’s functionality?

The Lasting Effects of Repeated Concussions

Two bisected brains are positioned next to each other. The brain on the left is the brain of a normal 27 year old and has very few dark spaces between its wrinkles. The brain on the right is the brain of Aaron Hernandez and has very prominent, dark spaces between its fold. Two arrows indicate ventricular enlargement and the atrophy of the fornix in the center of the brain.

The devastating and life-altering medical consequences of getting knocked out cold are far from what the movies have made them out to be. Dr. Marian Berryhill of the University of Nevada, Reno Department of Psychology explains the effects of repeated concussions observed in professional athletes.

Spit Out Your Seeds! The Bizarre Truth of the Fabled Poisoned Apple

Speckled red apples fill the frame. Three have stickers on them.

They say an apple a day keeps the Doctor away… right? Well, it turns out that apples have a spooky secret, as foretold by the Brothers Grimm classic, Snow White. Don’t blame poisoned apples on the evil queens — it was already there, in the form of a natural toxin. Enjoy your lunch!