Amazon Tipping Point / Democratic Candidates Talk Solutions at Climate Town Hall / Reviewing the Climate Crisis Town Hall / Beyond The Headlines / Underland: A Deep Time Journey The fires in the Amazon rainforest are illuminating the alarming speed of deforestation in one of the most biodiverse places on Earth - and bringing it closer to a "tipping point" transition into dry savannah.

Also, Democratic presidential hopefuls spell out their plans to address the climate emergency at town halls hosted by CNN, and a Harvard economist reviews their schemes.

And author Robert Macfarlane ventures into ice caves, braves underwater rivers, and crawls through catacombs to discover the "deep time" running beneath our feet.

Those stories and more, in this episode of Living on Earth from PRI.
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