Are Sharks Dangerous?

Are Sharks Dangerous? Sharks have a really bad reputation, but a lot of that's undeserved. Dr. Bruce Carlson, seniro chief science officer at the Georgia Aquarium, sets the record straight.

Are Sharks Predator or Prey? Are sharks hunting us, or are we pushing them to the brink of extinction? Dr. Bruce Carlson of the Georgia Aquarium tells us the truth.

Are Sharks Predator or Prey? Are sharks hunting us, or are we pushing them to the brink of extinction? Dr. Bruce Carlson of the Georgia Aquarium tells us the truth.

Which Are the Most Dangerous Rollerblading Stunts? Learn which are the most dangerous rollerblading stunts with this rollerblading video. Expert: Tim Phang

LANDSLIDE DANGERS Analysis of NASA satellite images showing areas of landslide risk have been shared with humanitarian assistance groups to help pinpoint disaster relief efforts.

Dangerous Encounters: Dens of Danger Herpetologist Brady Barr tries to retrieve a remote camera from an alligator den. Dens of Danger : SAT JUNE 26 8P et/pt : channel.nationalgeographic.com

World's Most Dangerous Drug Methamphetamines affect the brain in numerous ways. The drug tricks the brain into thinking that extra dopamine is released. Eventually, the brain shuts down. World's Most Dangerous Drug : WED JUNE 25 9P et/pt : channel.nationalgeographic.com

Dangerous Underwater Fix In the dark of night with a squall moving in, the captain tells the diving crew to get under the Balder to scrub the casing for the new rotor. World's Toughest Fixes: Thirty-Eight Ton Engine : WED OCTOBER 8 10P et/pt : channel.nationalgeographic.com

Dog Toy Dangers Better takes a look at dog toy dangers that every owner should know about.

Dangerous Foods for Pets The regular food that's good for you may be deadly to your pets.