A tall mountain with a snow covered peak rises clearly against a soft blue sky, creating a strong yet calm natural presence.

Matthijs Kuijpers is a Dutch adventurer and photographer. He spent the last 27 years traveling and taking pictures of the most dangerous, surprising and endangered cold blooded animals out there.

You know them and you might fear them, but snakes are our critter neighbors in Arizona. Here are 10 wacky questions people ...

BACKGROUND: Preeclampsia affects approximately 1 in 10 pregnancies, leading to severe complications and long-term health ...

Traveling at high altitude can be hazardous. The information provided here is designed for educational use only and is not a substitute for specific training or experience. Princeton University and ...