/ Modified jun 14, 2013 4:48 p.m.

Nova: Extreme Cave Diving

Dive with scientists into underwater caves that formed during the last ice age. Wednesday at 9 p.m. on PBS 6.

nova_cave_diving_container_spot Anthropologist Kenny Broad (left) and science diver Brian Kakuk (right) reveal discovered human remains (PHOTO: PBS)
This program follows the charismatic Dr. Kenny Broad as he dives into blue holes — underwater caves that formed during the last ice age when sea level was nearly 400 feet below what it is today.

The holes are Earth’s least explored and perhaps most dangerous frontiers. With an interdisciplinary team of climatologists, paleontologists and anthropologists, Broad investigates the hidden history of Earth’s climate as revealed by finds in this spectacularly beautiful “alternate universe.”

__Nova: Extreme Cave Diving, Wednesday at 9 p.m. on PBS 6.

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