Why is Horseshoe Crab Blood So Expensive?

Tungsten's boiling point is over 10,000 degrees Fahrenheit, and as tungsten carbide, it's one of the hardest materials we know. Learn how it's used for everything from armor-piercing bullets to electron microscopes to ballpoint pens in today's episode of BrainStuff, based on this ...  Show more

Without the hippocampus, our brains have serious trouble recalling and recording certain types of long-term memories. Learn how this brain structure works in today's classic episode of BrainStuff, based on this article: https://health.howstuffworks.com/human-body/systems/nervous- ...  Show more

How does the blood of a 450-million-year-old arthropod help prevent lethal infections in humans? And could we exhaust the supply?  Zachary Crockett wades in.

For decades, humans have harvested the blood of horseshoe crabs, which is used to test whether many of our vaccines and medicines are contaminated with harmful bacterial toxins. But the horseshoe crab harvesting industry has few regulations and a lot of secrecy. NPR investigative ...  Show more

The horseshoe crab has endured for over 450 million years. It has survived several mass extinctions including the one that killed off the dinosaurs. One reason for their incredible resiliency is their ability to fend off bacterial infection. Their blood contains cells that clot a ...  Show more

Horseshoe crabs are not much to look at.  But beneath their unassuming catcher’s-mitt shell, they harbor a half-billion-year-old secret: a superpower that helped them outlive the dinosaurs and survive all the Earth’s mass extinctions.  And what is that secret superpower? Their ...