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Latest Rebecca Nelson Stories

2011-07-07 19:18:16

In a typical year, California gets about 30 percent of its water from groundwater wells. Yet when it comes to managing this precious resource, the state of California relies on a mixed bag of more than 2,000 local water agencies with varying degrees of authority. Critics say that this decentralized system leaves the state vulnerable to overdraft, which occurs when water is pumped out faster than replacement water is absorbed. But according to a new report published by Stanford University's...

2005-06-08 18:21:38

An international team of chemists and molecular biologists has discovered a fundamental molecular mechanism that seems to play an important role in Alzheimer's disease, Parkinson's disease, mad cow disease and two-dozen other degenerative and fatal diseases. The discovery is reported June 9 in the journal Nature, where it is featured on the cover. Amyloid fibrils, rope-like structures formed by linked protein molecules, are the common feature of these diseases and may well hold important...

2005-06-08 18:03:37

Howard Hughes Medical Institute researchers have provided the first detailed look at the core structure of the abnormal protein filaments found in at least 20 devastating diseases, ranging from Alzheimer's to Creutzfeldt-Jakob disease, the human version of "mad cow" disease. The images reveal that the filaments form a short zipper that is closed and stuck. To get a more realistic picture of what the fibrils look like, however, one should picture a towering stack of zippers, each of which is...


Word of the Day
jument
  • A beast of burden; also, a beast in general.
'Jument' ultimately comes from the Latin 'jugum,' yoke.
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