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Why did the dinosaurs die out?

There are dozens of theories to explain a probable cause or causes. Throughout the Mesozoic Era, individual dinosaur species were evolving and becoming extinct for various reasons. The unusually…

The World's Favorite Pets

Household pets are common in America, Europe, and Asia. Australian Aborigines capture dingo (wild dog) puppies and…

Photosynthesis

Photosynthesis is a process in which green plants use energy from the sun to transform water, carbon dioxide,…

DK Science: Amphibians

AMPHIBIAWET FROGFROGSPAWNFIND OUT MOREAmphibians generally start life in water, but later change so that they can live on land. Most return to the water to mate. The life cycle involves…

DK Science: Crustaceans

PHYLUM: CRUSTACEAFIND OUT MORECrustaceans have a hard, jointed external skeleton, called an exoskeleton, that protects them like armour. They have five pairs of jointed legs, and in some…

Cats

Adopting a cat? Make the Right Choice! You may have heard the saying, "You own a dog, you feed a cat." It's true that cats value their independence a bit more than their canine counterparts…

Wombat Video Activity

Examining a primary source In 2011, scientists in Australia unearthed the nearly complete remains of a “giant wombat,” or Diprotodon optatum, which roamed the Earth two million years ago.…

U.S. Zoos and Aquariums

Source: The facilities listed are members of, and accredited by, the American Zoo and Aquarium Association (AZA) to ensure that they are maintaining professional standards. The AZA also accredits…

DK Science: Courtship

COLOURFUL PLUMAGEMOCK DUALBONDING THROUGH GROOMINGMATING CALLSANOLE LIZARDRUTTING RED DEERLEAVING A SCENTFIND OUT MORESome animals perform complex rituals to attract a mate. These displays,…

You and Your Cat

The time you take to get to know your cat will reward you with a precious relationship full of understandings that break the species barrier. And every cat you love throughout your life…