Scientists look for signs of pollution in the superhighway in the sky
If you think traffic is getting worse on your commute, you're not alone.Hundreds of commercial airline flights carry thousands of passengers from theU.S. to Europe each day-traveling along what has become the busiest jet superhighway in the world: the Atlantic corridor. Could all of tha...Scientists uncover possible cause of colitis
...tudy, they found that colitis was up to five times worse if mice lackedthe enzyme, known as NEP. When they reintroduced NEP into these mice, the bowelinflammation subsided, they report. Their study shows that loss of the NEP enzyme fuels inflammation becausesubstance P doesn't break down and so continues t...USGS studies wildfire ecology in the western United States
...species from Africa known as buffelgrass -- is far worse than was previously known. "There wasn't a fire problem in this area before the exotic species came in," says Schwalbe. "Now we're seeing a biome conversion, from palo verde and saguaro habitat to a mesquite-acacia savannah with a Mediterranean exoti...USGS fire research in the southeast
...ely bare of other vegetation." Making matters worse is the fact that Chinese tallow is extremely fireresistant. In a natural community, when there is an accumulation of woodyvegetation, fire can come along and burn it out, says Grace. Chinese tallow,however, makes the ecosystem non-flammable. "There's...New DNA vaccine could fight fish disease
...tion, says Endresen. This perception might be made worse becausethe DNA comes from a virus. "We know too little about what happens to the viralmaterial after we eat the salmon," says Endresen. "Norway sells salmon to therest of Europe and the Japanese. No one likes the idea." Stephen Hunt, who stud...Farming's genetic revolution has yet to materialise
...ers who haveembraced modified crops might have had worse problems with pests to begin with....Invasive fishes pose increasing threat to U.S. waters and native fishes, says USGS
...ge. "Many of these transplants are just as bad or worse than those from foreign countries,"says Pam Fuller, another co-author of the book and a USGS scientist in Florida. Scientists believe that non-native species were a factor in 24 of the 30 knowncases of a native fish species becoming extinct. USGS Ch...Research Shows Wrong Activity Worse Than No Activity In Developing Brain
...ent goes, "bad" or "inappropriate" experiences are worse than no experiences at all, according to a study in the Jan. 28, 1999,issue of Nature. The study shows that the loss of connections between neurons in the brain is not theresult of inactivity, as previously thought, but a consequenc...Exercising Just Three Days May Provide Heart Attack Protection
...ot trained at all. The untrainedanimals fared much worse after the induced heart attacks, a factor thatPowers attributes to the approximately 500 percent increase of HSP72 in thetrained rats. "These experiments are the first to demonstrate that this actually worksin the body," Powers said. "It's lo...Natural Childbirth Could Play A Role In Brain Development
...t week's meeting. The Caesarean rats alsohad a far worse response to repeated tail pinching, a standard test for stressreactions. The results hint that babies born by Caesarean may be more vulnerable toschizophrenia, which is thought to involve an overactive dopamine system and hasa statistical lin...Test For Genetic Trait May Indicate Heart Benefits Of Hormone Replacement Therapy
...s the disease in people withpattern B tends to get worse faster than in those with pattern A, but withtreatment, they improve faster. Researchers studied 44 postmenopausal women, average age 58 years. Half of thewomen took estrogen plus progestin and the other half took a placebo. Afterfour months, the r...Study Finds First Genetic Clues To Brain Tumor Treatment
...and the chromosome9 deletion was associated with a worse prognosis. But overall, the chromosome 1abnormality was the most powerful and significant factor associated withresponse to chemotherapy. "What this means is that patients whose tumors show the chromosome 1 loss havean excellent chance of surviving ...40 Percent Of Deaths Are Environmental
...aid. Global climate change will make matters even worse for humans and "better" for disease, the Cornell study predicts. Increased heat favors most human diseases, as well as the diseases and pests of food crops, and the coming century will see masses of weakened "environmental refugees" fleeing their ho...Researchers Identify How AIDS Virus Kills Cells It Doesn't Infect
...akes HIV-infected people take asudden turn for the worse after years of harboring the AIDS virus but showingfew symptoms. They may also point to new ways of stopping this sudden decline,which ultimately claims the lives of patients with AIDS. The research was conducted by Eric Verdin, MD, an investigator a......with the periodic table of the elements. Nothing's worse than finding outthere's no "chemistry" with your date. Something just doesn't feel right, andlater, a man or a woman will shrug and say, "There was just no chemistry betweenus." They may be more right than they know. A new study by geneticist......ions only cure about 60 percent of infections and, worse yet, in somegeographical regions T. cruzi appears to be resistant to the commonly usedmedications. T. cruzi primarily invades heart muscle and certain nerves, slowly destroyingcells. When the parasite attacks the human heart, most victims become acu...Allergy And Asthma-Exaceberating Mites, Molds And Pollens On The Rise Due To El Niño . . . La Niña
... "This year, conditions in Southern California are worse for allergy and asthmasufferers because of the high levels of humidity that have resulted inexcessive pollens, molds, ticks and mites," says Zab Mohsenifar, M.D., Chair ofthe Pulmonary and Critical Care Department at Cedars-Sinai Medical Center.Robe......ems in radiation shielding is that a little can be worse than none. Radiation actually comprises electromagnetic radiation - X-rays and gamma rays - and particulate radiation - high-speed particles like electrons, protons, neutrons, and atomic nuclei. Low-energy radiation can be stopped by a spacecraft wal...... reported cases in whichTourette's began or became worse after a streptococcal infection. Tourette's syndrome affects approximately five in every 10,000 persons. Because it occurs with high frequency in some families and identical twins, agenetic error has long been suspected as a cause. "However,......igher levels ofthese two proteins correlate with a worse prognosis; correspondingly, lowerlevels correlate with longer life expectancy. Previous scientific reports havefound that TGF-" and EGFR are not expressed uniformly within a specific type ofcancer. Moreover, until now, no substantial support existe...