Sea otters are surprisingly good at using tools. If they come across a particularly tough clam shell and they are desperate to reach the meat inside, they have a plan. They deploy their trusty rock to ...

Here are 12 of the most beautiful national parks in the U.S.

These 10 charming gateway towns throughout the U.S. are located near national parks, and are (almost) as beautiful as the outdoors nearby. Here's what to do in each.

Spring travel usually brings to mind busy European capitals or crowded Caribbean beaches, but cruising offers a ...