Conservationists say Joshua Tree is one of country's most endangered national parks. The desert's natural balance is threatened by smog from the L.A. basin, encroaching non-native plant species, competitors for scarce water, and chronic underfunding by the federal government.
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Show 22
In this edition of Impact we visit Allensworth, California's only historical all-black town. After that we look at Joshua Tree National Park that is now on the...
Allensworth
Allensworth, California's first and only all-black town, survived for nearly half a century. Now a state park, the social experiment's history is preserved....
Toilets
Taller toilet seats help keep elderly safe while heeding nature's call.
