Humming- bird Sex

Do hummingbirds have sex in midair?

Hummingbirds almost never stop moving, and their legs are small and weak. So do hummingbirds do everything in midair -- even mate?

External Organs

How can someone be born with organs outside the body?

It happens more often than you may think. Sometimes a baby is born with organs outside of his or her body and has a slim chance of survival. What causes this?

Bioterrorism

How Bioterrorism Works

When an anthrax attack just after Sept. 11 killed five people and infected 18 more, U.S. residents were sent into a bioterrorism panic. Bioterrorism has actually been around for many centuries, but we keep finding new ways to combat it.

Albinism

How Albinism Works

Despite some stigma affecting those who have it, albinism isn't a disease. It's a genetic condition marked by the body's inability to produce melanin.

Gas Leak

If I have a gas leak in my home, will I die?

There's a reason a natural gas leak has a rotten egg odor. That stink is meant to signal danger. Any spark -- a match or even a light switch -- could cause a serious explosion.

Flight Attempts

Top 10 Bungled Attempts at One-person Flight

Since prehistoric times, people have wanted to take to the skies. Trouble is, humans weren't meant to fly. Of course, that didn't stop some determined souls from trying.

videos: engineering

today's trivia

Dr. Michel-Gabriel Paccard and Jacques Balmat were the first to climb which mountain?

trivia trivia