Word: sediment
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Dates: during 2000-2009
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...Keller and Addate worried that we were misreading both the geologic and fossil records. They conducted surveys at numerous sites in Mexico, including a spot called El Peñón, near the impact crater. They were especially interested in a 30-ft. layer of sediment just above the iridium layer. That sediment, they calculate, was laid down at a rate of about 0.8 in. to 1.2 in. per thousand years, meaning that all 30 feet took 300,000 years to settle into place...
...impact site makes the results even less reliable. Earthquakes and tsunamis that resulted from the collision could have wrought havoc on the sedimentary record, causing discrete strata to swirl together and completely scrambling time lines. Keller disagrees, pointing out that the slow accretion of sediment that she and Addate recorded is completely inconsistent with a sudden event like a tsunami. (See pictures of animals in space...
...something I love. I want to do it forever. The trick will be to find a sophomore in two years to pick it up when I graduate,” Hiatt said as he transferred the fermenting liquid from the barrel to the carboy to remove sediment. He spends about ten hours a week preparing Smada, making the hallways of Randolph smell like the steam behind John Harvard’s. “Just smell it, it smells great,” he said...
...Finally, to get a clearer, better brew, periodically transfer the wort to a new container to remove the sediment. At this point, it’s also the time to “dry hop” it with fancier flavors like roasted coffee grounds or coriander to give the beer more complex flavors...
...focus right now should be simple: better levees for New Orleans and real restoration of the coast. Southern Louisiana began to disappear after the Corps imprisoned the Mississippi River and converted it into a barge channel that stopped depositing sediment into its Delta; satellite images of this spring's floods showed the river wasting huge plumes of sediment out to sea, sediment that could be diverted to restore coastal marshes and rebuild barrier islands. There is already $1 billion worth of small projects on the books to start that process, but restoration work is moving much, much more slowly than...