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Medieval stained-glass windows colored in gold nanoparticles help purify air when lit by the sun, a new study finds.
"For centuries people appreciated only the beautiful works of art, and
long life of the colors, but little did they realize that the stained-glass windows are also, in modern language, photocatalytic air purifiers." (
People usually require blood transfusions that match their own blood
type: A mismatch can be fatal. Yet type O-negative can be safely
transferred into anyone -- but it is only possessed by 7 percent of
the population, leaving supplies perpetually short. Now, scientists have used stem cells to generate blood -- a feat
that could eventually lead to endless supplies of type O-negative blood. (
Scouring the Earth for new sources of clean, renewable energy,
scientists and engineers are exploring some unusual nooks and crannies.
Kites, waves, tides, ocean currents, geysers, garbage, cow manure, old
utility poles, algae and bacteria are being enlisted in the effort to
lower the world's reliance on climate-warming coal and oil. Here is an update on the latest and greatest advancements.
Blacktop is exceptionally good at soaking up the sun’s
warmth. Now, a research team has found a way to use that heat-soaking property for an alternative
energy source.
Through asphalt, the researchers are developing a solar collector
that could turn roads and parking lots into ubiquitous—and
inexpensive—sources of electricity and hot water. (Newsletter Signup
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