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Learn about Earth’s neighborhood.
the solar system’s planets with the naked eye from Earth—and all eight if you have

Seahorses are tiny fishes that are named for the shape of their head, which looks like the head of a tiny horse. There are at least 50 species of seahorses. You’ll find them in the world’s tropical and temperate coastal waters, swimming upright among seaweed and other plants. Seahorses use their dorsal fins (back fins) to propel slowly forward. To move up and down, seahorses adjust the volume of air in their swim bladders, which is an air pocket inside their bodies. Tiny, spiny plates cover seahorses‘ bodies all the way down to their curled, flexible tails. The tail can grasp objects, helpful when seahorses want to anchor themselves to vegetation. A female seahorse lays dozens, sometimes hundreds, of eggs in a pouch on the male seahorse’s abdomen. Called a brood pouch, it resembles a kangaroo’s pouch for carrying young. Seahorse young hatch after up to 45 days in the brood pouch. The baby seahorses, each about the size of a jelly bean, find other baby seahorses and float together in small groups, clinging to each other using their tails. Unlike kangaroos, baby seahorses do not return to the pouch. They must find food and hide from predators as soon as they’re born.
These fish don’t have true stomachs, just a digestive tube, so they need to eat all

A colony of rare albino squirrels runs the town of Olney, Illinois—sort of.
Affected by a genetic defect, these pink-eyed critters have no color in their coats

Get facts and photos about this U.S. island territory.
Throughout their history, Samoans have been trading with, marrying, and sometimes

Argentina is a vast country located in the southern part of South America.
Unauthorized use is prohibited. 1 / 3 1 / 3 The dance called tango is thought to have

Find your perfect fit!
Deciding on a pet is more than just picking your favorite animal—you have to make

A serval sits patiently in a grassy field, swiveling its head back and forth like a watchful owl. The predator is scanning the savanna for a meal not with its eyes, but with its oversize ears. An unseen rodent stirs under the thick brush, and the wild cat tenses. It crouches on its legs and feet before launching itself up and over the tall grass. Guided only by sound, the serval lands directly on the once-invisible rat.
Servals have both—kind of.

Canada is a vast and rugged land. From north to south it spans more than half the Northern Hemisphere.
Many Native Canadians live on their traditional lands, but many others have moved

Nepal lies between China and India in South Asia. The country is slightly larger than the state of Arkansas.
The land has become fragile and erodes away when the trees have been removed.

What’s the problem?
This sea creature isn’t alone: Over 700 species of marine animals have been reported