A barn owl’s ability to hunt by hearing alone relies on exquisite variations in the structure of its feathers.

The steroid-friendly sports experiment failed to deliver the revolution it sold.

A new study reveals that if left unchecked, unaccounted-for emissions of ozone-harming substances could delay the layer’s full recovery by almost a decade.

You might know to steer clear of green potatoes and rhubarb leaves. That’s because they produce toxins that can make humans sick.