Word: zinc
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...protection you need from titantium dioxide, a tried-and-true chemical agent that physically blocks the sun's rays (hence the name sunblock) from reaching the skin, rather than absorbing them, like most sunscreens. You remember titanium dioxide. Like zinc oxide, it's one of those gunky white pastes that lifeguards used to plaster all over themselves. Both chemicals have been reformulated so that they no longer leave a residue. But some people find that these sunblocks clog their pores or feel sticky on their skin, so they may prefer one of the new products with Parsol 1789, like Ombrelle...
...been reported before, but the measurements were so marginal that they left more room for doubt than confidence. Not this time. The Super-Kamiokande neutrino observatory, a stainless-steel chamber filled with 12.5 million gal. of water, lined with sensitive light detectors and located deep underground in an old zinc mine near the city of Takayama, is among the most sensitive instruments of its kind in the world. The physicists who use it are widely recognized as extremely careful experimenters. And, says University of Hawaii physicist John Learned, there wasn't much doubt about what they...
Hamer switched to behavioral genetics from basic research; after receiving his Ph.D. from Harvard, he spent more than a decade studying the biochemistry of metallothionein, a protein that cells use to metabolize heavy metals like copper and zinc. As he was about to turn 40, however, Hamer suddenly realized he had learned as much about metallothionein as he cared to. "Frankly, I was bored," he remembers, "and ready for something...
...treat the poisons before they reach the danger level, some residents are promoting a new twist on their old livelihood: mining the Berkeley lake. There is growing talk by both local residents and officialdom (scientists and bureaucrats) of seeking to extract perhaps hundreds of millions of dollars' worth of zinc, copper, magnesium and other minerals that lie dissolved in the waters. The alternative--a plan to clean the waters with a standard lime-precipitation technique--has its own problems: critics warn that it could leave the community in the shadow of a mountain of toxic sludge as high...
Such penury seems baffling when viewed against the backdrop of Zaire's extravagant natural endowments. Beneath its vast territory lie 60% of the earth's cobalt and much of the world's supply of industrial-grade diamonds, plus substantial reserves of zinc, copper, manganese and gold. But ever since the prices of metals began dropping in the 1970s, Zaire's economic progress has been frozen. Stagnation turned into catastrophe in the late 1980s, when the cold war ended and the Western powers that had bankrolled Mobutu as a bulwark against communism informed him that his credit...