Wildlife 'Red List' a grim tally of extinction threat

The world will get an update Saturday of the Red List of Threatened Species, the authoritative catalogue of how many of the planet's animal and plant species are teetering on the brink of extinction due to human activity.

RNA has been recovered from an extinct species for the first time

A new study shows the isolation and sequencing of more than a century-old RNA molecules from a Tasmanian tiger specimen preserved at room temperature in a museum collection. This resulted in the reconstruction of skin and ...

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