Many animals go into hibernation when winter comes, which is one of nature's most amazing ways to stay alive. If you're wondering which animal hibernates the longest, the answer might surprise you: it ...

When people have strokes or heart disease, it’s often a sign that blood (and by default oxygen) isn’t getting to the places it should in the body. If doctors don’t intervene quickly enough, the oxygen ...

It's after 8 p.m. on a rainy summer evening in 2024 and most of the diurnal animals at the Milwaukee County Zoo have tucked in for the night. But the zoo is far from quiet. Visitors still walk the zoo ...