Temperature determines the sex of painted turtle hatchlings, and climate change is tipping the balance to an all-female future.
Why does the consistency of an egg change from liquid to more or less solid as it cooks?
Humans aren't the only animals that can alter landscapes.
If you think the Clones on Star Wars were a threat, just wait until you hear about Asian clams.
A male sand goby is less likely to eat the eggs containing his future offspring if a female goby is around.
The reason it's smarter to store your eggs with the fat end up is that the egg itself does not completely fill the interior of the shell.
Stink bugs have gotten a bad rap, but the spined soldier bug variety are great for taking care of garden pests.
The color of eggshells helps mothers identify their own kind and/or camouflage them with their environment.
Yucca moths and flowers depend on each other for reproduction.
Magpie personality traits differ according to their parents' hormone levels.