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Acid Test: The Global Challenge of Ocean Acidification

2009

This groundbreaking NRDC documentary explores the startling phenomenon of ocean acidification, which may soon challenge marine life on a scale not seen for tens of millions of years. The film, featuring Sigourney Weaver, originally aired on Discovery Planet Green.

21:35 min

03:38

The Top 4 Crises Facing the World Today | Jared Diamond | Big Think

According to historian Jared Diamond, we currently have four global crises to address: the ongoing threat of nuclear attacks, climate change, running out of resources, and socioeconomic inequality.

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Jared Diamond
2019
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Global Challenges