878,761 articles

Researchers discover RNA repair system in bacteria

In new papers appearing this month in Science and the Proceedings of the National Academy of Sciences, University of Illinois biochemistry professor Raven H. Huang and his colleagues describe the first RNA repair system to be discovered in bacteria. This is only the second RNA repair system discovered to date (with two proteins from T4 phage, a virus that attacks bacteria, as the first).

The first neotropical rainforest was home of the Titanoboa

Smithsonian researchers working in Colombia's Cerrejón coal mine have unearthed the first megafossil evidence of a neotropical rainforest. Titanoboa, the world's biggest snake, lived in this forest 58 million years ago at temperatures 3-5 C warmer than in rainforests today, indicating that rainforests flourished during warm periods.

By Simulating Gullies, Geographers Discover Ways to Tame Soil Erosion

(PhysOrg.com) -- Dead zones in critical waterways, accelerated loss of arable land and massive famines. They're all caused by the 24 billion tons of soil that are lost every year to erosion, a phenomenon that costs the world as much as $40 billion annually. But predicting where erosion occurs, and thus how to prevent it, is a serious challenge.

Targeting tumors: Researchers develop more precise approach to delivery of chemotherapy drugs

(PhysOrg.com) -- Chemotherapy is one of the most effective ways to fight cancer, but the toxic medicine can cause collateral damage to healthy tissue. UC Irvine's Kenneth Longmuir, physiology & biophysics associate professor, and Richard Robertson, anatomy & neurobiology professor, believe they have developed a way for these drugs to reach specific tumors with increased precision, thereby limiting...

SCID Kids Leading Healthy, Normal Lives 25 Years After 'Bubble Boy'

(PhysOrg.com) -- Mention the words "bubble boy" and many will recall David Vetter, the kid with big eyes and a thick thatch of dark hair who died 25 years ago after spending almost the entire 12 years of his life in a germ-free, plastic bubble. David was born with severe combined immune deficiency, or SCID, a condition that robbed him of an immune system.

Self-sacrifice among strangers has more to do with nurture than nature

(PhysOrg.com) -- Socially learned behavior and belief are much better candidates than genetics to explain the self-sacrificing behavior we see among strangers in societies, from soldiers to blood donors to those who contribute to food banks. This is the conclusion of a study by Adrian V. Bell and colleagues from the University of California Davis in the Oct. 12 edition of Proceedings of the...