If you're heading to the beach, there's a danger you should know about. It's not sharks or rough surf -- it's the sand. Digging holes in the sand can be a serious hazard for you and your family.

This story from The Conversation is by Stephen P. Leatherman, Professor of Coastal Science at Florida International University. While millions of Americans vacation on beaches every year to seek out ...

From tree-climbing leopards to skull-crushing Jaguars, from fast-swimming fishing cats to quick-digging sand cats, watch the killer strategies that make wild cats possibly the deadliest family on the ...