Where do they go?  How many are there?  What's with the tusk?  Narwhals (in the Arctic Ocean) have inspired myth and wonder but are still little known to science.

In Search of the Mysterious Narwhal

Ballerina turned biologist Kristin Laidre gives her all to study the elusive, deep-diving, ice-loving whale known as the “unicorn of the sea”

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Wild Things: Life as We Know It

Dinosaur gangs, psychedelic fish and long-distance elephant calls

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Much Ado About Chicxulub

Citizens of Mexico City wear masks to prevent the spread of swine flu.

Dreading the Worst When it Comes to Epidemics

A scientist by training, author Philip Alcabes studies the etymology of epidemiology and the cultural fears of worldwide disease

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No Time for Protohadros

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