Links for NOVA S42E3: Sinkholes: Buried Alive

What's Hot Now

Episode 3

77 watches

January 28, 2015
Sinkholes are examined. The collapses can be gradual or sudden; and occur when carbon dioxide in the air dissolves in rainwater and forms a weak acid that weakens limestone and other water-soluble rocks beneath the soil. Included: video of dramatic collapses.
January 28, 2015
Sinkholes are examined. The collapses can be gradual or sudden; and occur when carbon dioxide in the air dissolves in rainwater and forms a weak acid that weakens limestone and other water-soluble rocks beneath the soil. Included: video of dramatic collapses.