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Warnings from the Wild
This British report travels around the world reporting on disturbing evidence of global warming. Included: thinner polar bears in the Arctic; oak trees blooming earlier in Britain; and, in Costa Rica, the lowland keel-billed toucans moving to higher lands, where they are competing with other wildlife for food.
What on Earth Is Wrong With Gravity?
That might seem a bizarre statement, coming a century after Einstein showed that gravity is the result of matter warping space and time around it.
The Universe: Beyond the Big Bang
The Big Bang theory and the creation of the universe are examined. Included: interviews with physicists and historians.
Young Scientist Challenge 2005
America's top 40 middle-school scientists, representing 16 states, compete for money and scholarships. The topic is "Forces of Nature."
Wasted Space
A designer uses data to make the most of spaces in homes.
Science of War
Examining the research behind technology for the modern-day battlefield.