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.

A call to arms: Enlisting private land owners in conservation

In 1872 the United States created Yellowstone, the first National Park in the world. Since then many more parks, monuments, preserves, wildernesses and other protected areas have been created in the USA. Protected areas, ...

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