Latest articles by Joseph Castro
11 Surprising Facts About the Immune System
Did you know that autoimmune diseases predominately affect women, or that some people have hardly any immune system? Here are 11 surprising facts about the immune system.
Coral 'White Plague' Epidemic Could Be Caused by Virus
The deadly white plague of corals was once thought to be caused by bacteria, but viruses may also be involved in the disease.
11 Surprising Facts About the Endocrine System
Did you know that doctors once diagnosed diabetes by tasting patients' urine? Here are 11 surprising facts about the endocrine system.
11 Surprising Facts About the Digestive System
Did you know that some animals don't have stomachs, or the reason why flatulence smells bad? Here are 11 surprising facts about the digestive system.
Animal Sex: How Kangaroos Do It
Unlike many other animals, kangaroos have sex for a long time — up to 50 minutes. And the female has three vaginas, two of which are inseminated by the male's double-headed penis.
Why Is My Poop Green?
It may be alarming to see green poop in your toilet bowl, but it isn't necessarily a cause for concern.
Why Do We Yawn?
A number of hypotheses exist to explain why we yawn, but scientists have yet to come to a consensus about the phenomenon.
Animal Sex: How Seahorses Do It
Seahorses have a sex role reversal, where males get pregnant instead of females. But how do they actually get busy and get pregnant in the first place?
Why Are Rain Clouds Dark?
It's pretty well-known that most clouds are white, while rain clouds are usually a darker shade of gray. But why are rain clouds so dark?
What Is White Noise?
People often think of white noise as television static, or the serene sound of ocean waves. But physicists and sound technicians use a much more specific definition of white noise.
