CALIPSO in 2004
From reports of increasing temperatures, thinning mountain glaciers and rising sea level, scientists know that Earth's climate is changing. But the processes behind these changes are not as clear. Two of the biggest uncertainties in understanding and…
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Mathematics
Mobius Strip
A Mobius Strip is an amusing three-dimensional object whose surface has only one side. Huh? Well, most objects…
Biology
Brain Waves
Your brainwaves normally vary from a low vibrational state of about one Hz ('Hertz,' or vibrations per second)…
Geology
Global Warming?
The contiguous United States experienced its 16th coolest summer on record and seventh coolest August,…
Engineering
Space Lasers Keep Earth's Air Clean
Space laser technology is coming to our smokestacks and automobiles. Leave it to NASA to take its inventions…