It's shark season, and not just on television. With summer beach season in full swing, Cape Cod National Seashore officials are offering guidelines on how to avoid great white sharks that follow grey seals to the cape's waters.

After more than two decades, the common loon has returned to La Mauricie National Park in the Canadian province of Quebec.

Thunderstorms raking the Rocky Mountains have led to numerous injuries, and possibly one fatality, in national parks in the region. A mud-and-rock slide Thursday afternoon at Rocky Mountain National Park also possibly trapped hikers in the backcountry.