A new study examines the connection between earthquakes and geysers. Evidence mounts that dark matter – something that's long perplexed scientists -- originates with black holes. Plus, on 'This Day in History'; the first coast-to-coast highway is dedicated in the US.

Earthquakes might trigger Yellowstone's Steamboat geyser : NPR

Evidence mounts for dark energy from black holes

TDIH: America's First Transcontinental Highway Turns 100 : NPR

TDIH: The Lincoln Highway | FHWA (dot.gov)

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