Sturgeon have been swimming around for more than 200 million years, but their eggs are sought after for caviar. This week, the National Marine Fisheries Service placed the Atlantic sturgeon on its endangered species list. Guest host David Greene speaks with Dr. Ellen Pikitch, executive director of the Institute for Ocean Conservation Science at Stony Brook University.
Climate change activist Tom Steyer has become the single biggest supporter of Democrats this election. New FEC filings show he gave his NextGen Climate Action superPAC another $15 million. In ads, NextGen is tying candidates in six Senate races to the conservative billionaire Koch brothers.
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