the major division of animals that have a backbone (spinal column) which is made up of several different pieces... more

Read more about External Fertilization

External Fertilization

Palmyra atoll — Corals aren't exactly swift movers, so how do they find a mate? Image by Jim Maragos/U.S. Fish and Wildlife Service.

Read more about Internal Fertilization

Internal Fertilization

Mating dragonflies — A male Halloween pennant dragonfly is clasping the neck of a female. She moved her abdomen under him to pick up a sperm packet. Image by cotinis via Flickr.

To Breed or Not to Breed

Sarala Pradhan Ioulia Bespalova

For many organisms, reproduction is a huge part of life. But what, exactly, does reproduction mean? Well, it can mean so many different things, including breeding or not, caring for young (or not), or giving birth (or not)... read on to learn about the diversity of ways that organisms reproduce.

Where In The World Is Kazakhstan?

Heather Triplett

Where in the world is Kazakhstan (Ka-zakh-ston)? This may be a puzzling question to some, but no longer. This story we will help put the pieces together.

He Ain't Tasty He's My Brother

Steve Koppes

While cannibalism is fairly common among insects and crustaceans, most backboned animals avoid feeding on their own kind.

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