Word: sunlights
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
Sometimes the trouble shows up right away. Water skiers, or snow skiers for that matter, can develop a type of temporary blindness, called photokeratitis, that occurs when reflected sunlight actually burns the cornea, the clear covering over the eye. Other conditions may be triggered after years of exposure. Studies have linked UV radiation to an increased risk of cataracts, in which the lenses of the eyes become cloudy, as well as to macular degeneration, in which the cells in the central part of the retina slowly...
JUDGMENT CALL Anything that exposes geeks to sunlight...
...Mars, which is farther from the sun and hence cooler. But it would take a lot of engineering to turn Mars' frozen, Gobi-like surface into a livable habitat. (Among proposals that have been floated: heating the planet with artificial greenhouse gases, deploying huge orbiting mirrors to catch sunlight and sprinkling heat-absorbing soot on the Martian icecaps.) Eventually, says Mars promoter Robert Zubrin, visitors wouldn't need spacesuits anymore...
...building—and of course the color, amount and “relief” of the mortar can make all the difference. Most of the brick in the Yard, and the mortar, works quite well. Looking at a wall in “raking” sunlight is particularly revealing and often beautiful. After a while, you want to look at some of the brick over and over again—and you want to tear some of down, and start again from scratch...
...PRICE OF FAITH? A small study of Orthodox Jewish teens suggests that more than half have significantly low bone density. Reason? The Orthodox encourage scholarly over physical activity--and favor modest clothing, which blocks sunlight, crucial for efficient calcium absorption. And because Orthodox Jews don't eat dairy products for six hours after eating meat, they have fewer opportunities to consume calcium. Recommendation: Orthodox kids should take supplements...