These fairy terns just lay their eggs right onto the branch and hope they don't fall off! That egg is not very ... Lots of other animals lay eggs too. This egg is starting to hatch. Do you know ...

Lots of animals produce eggs. These protect and provide for offspring as they develop. There are over 500 species of shark living in waters around the world and the majority give birth to live young.

Birds lay eggs of surprising variety, and scientists have long wondered why. Could it be that certain shapes protect eggs from shattering? Or perhaps allow them to fit snugly in a nest?