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» conservation and developmental biology

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image: Polar Bear More Ancient Than Realized

Polar Bear More Ancient Than Realized

By | April 20, 2012

A genetic analysis reveals that the polar bear split from the brown bear some 600,000 years ago.

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image: Spotted: Emperor Penguins

Spotted: Emperor Penguins

By | April 17, 2012

Satellites are used to count the number of penguins living in Antarctica.

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image: Spotting a Giraffe's Age

Spotting a Giraffe's Age

By | April 11, 2012

A giraffe’s spots can give away its years.

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image: Telltale Tortoises

Telltale Tortoises

By | April 1, 2012

Researchers are permanently marking endangered reptiles in Madagascar to keep the animals from entering the illegal wildlife trade. Read the full story. [gallery]

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image: Marked for Life

Marked for Life

By | April 1, 2012

Conservationists working in Madagascar are doing the unthinkable—defacing the shells of endangered ploughshare tortoises—but it may be the animals’ last hope.

4 Comments

image: The Two Faces of Metastasis

The Two Faces of Metastasis

By | April 1, 2012

During development, the cells of an embryo change their pattern of gene expression, which allows them to detach from their original location and migrate to another part of the embryo, where the pattern changes again to allow formation of a new organ.

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image: Are Cancer Stem Cells Ready for Prime Time?

Are Cancer Stem Cells Ready for Prime Time?

By | April 1, 2012

A flood of new discoveries has refined our definition of cancer stem cells. Now it’s up to human clinical trials to test if they can make a difference in patients.

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image: Opinion: Saving an Owl from Politics

Opinion: Saving an Owl from Politics

By | March 26, 2012

The imperiled northern spotted owl faces extinction if efforts enacted to save it continue to put politics ahead of science.

22 Comments

image: New Frog Species in NYC?

New Frog Species in NYC?

By | March 15, 2012

Genetic data support designating a New York City-area leopard frog as a unique species.

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image: Self-cloning Coral

Self-cloning Coral

By | March 1, 2012

Coral embryos broken apart by waves can continue developing into adult clones.

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