This video segment, adapted from a NOVA broadcast, discusses the extreme environments that caves present for living organisms, and the unique strategies for survival adopted by communities of cave-dwelling microbes that...
Large oil spills are not a common occurrence. When a tanker runs aground or collides with another vessel and releases its cargo to the sea, it's often major news, especially if the spill is near land. The images in this...
Even with the waves lapping at their feet, few people consider ocean currents and their importance to global climate. Although the Gulf Stream cannot be seen flowing by off North America's East Coast, in Western Europe,...
Earth's surface has changed in countless ways during the 4.6 billion years since it formed, and it continues to change today. This video segment looks at some of the geologic processes that have shaped the landscape...
Since the Hawaiian Islands were all created by volcanic activity, it is somewhat surprising that only the island of Hawaii now possesses any active volcanoes. Why did the volcanoes that built the other islands stop...
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