Originally published on Tue August 19, 2014 7:27 am
Back in the 1990s, historical societies, museums and symphonies across the country began transferring all kinds of information onto what was thought to be a very durable medium: the compact disc.
Now, preservationists are worried that a lot of key information stored on CDs â€” from sound recordings to public records â€” is going to disappear. Some of those little silver discs are degrading, and researchers at the Library of Congress are trying to figure out why.
As the sun rose on Lake Arrowhead late last week, four guys on a motorboat armed with 5,739 pounds of white powder set out to tackle one of Texas' most vexing water problems â€” evaporation from surface reservoirs. Last year, evaporationÂ cost the state 2 trillion gallons of water, and it has been eliminating as much as 40 million gallons of water a day from drought-stricken Wichita Falls' supply this summer.
The four men, who work for a company called Flexible Solutions, were applying WaterSavr to Lake Arrowhead. The company claims that its product will save the city hundreds of millions of gallons of water by preventing evaporation. At a cost of $400,000 for the product and labor, the city is hoping the experiment, the first of its size in the nation, will work. And the rest of parched Texas is watching. But there are plenty of skeptics.
As the heat-trapping gas proliferates, the world warms, and the climate effects domino: droughts intensify, floods increase, ice melts and seas rise. The question now isn't whether human activity is changing the global climate; the question is what to do about it.
A team of geologists and paleontologists has agreed on an issue that you might have not realized was still in question: an asteroid, and the fallout from its impact, killed the dinosaurs. Some dinosaur experts were holding out on blaming the asteroid, saying that dinosaurs were already on their way out.Â The scientists say they're getting a better understanding of the "tempo" of dinosaur extinction.