The eye of a common loon (also known by its way cooler name, the Great Northern Diver) covered in water droplets from a recent dive.
If every step taken, hour slept, and heartbeat can be measured, recorded, and analyzed, are we taking control of our health or losing the plot entirely?
A mysterious egg popped up in 2008. Researchers would need to wait more than a decade to peer inside it.
We'll give you a hint: It lives underwater, but it doesn't swim. At least, not as an adult.
The discovery marks the first time scientists have found mummified big cats in the Arabian Peninsula.
A comprehensive analysis of Tyrannosaurus rex fossils is surprising scientists with just how long these apex predators took to become big boys.
And they've proposed two "kind of crazy" ideas for how it got there.
The head of a Great Northern Diver, bedecked in beads of water. Photo: Sue Dougherty 
