Recent fossil discoveries
of dinosaurs with feathers add to a growing body of evidence that one
branch of the dinosaur family tree developed into birds. Learn about
the latest scientific discoveries and what they tell us about the
ancestry of birds.
When Mammoths Walked the Earth (Originally published by Clarion,2002)
During the Ice Age,
woolly mammoths roamed the frozen lands to the north, while the huge
Colombian mammoths lived in warmer parts of North America. Find out how
scientists are learning more about these extinct relatives of elephants
from fossil remains found in places ranging from sinkholes and tar pits
to frozen tundra and the bottom of the sea.
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