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Scientists have recreated the conditions at Earth’s core-mantle boundary 2,900 km beneath the surface. Using X-rays at the European Synchrotron Radiation Facility, they probed tiny rock samples at extreme temperature and pressure showing for the first …
The Rio+20 summit on promoting jobs, clean energy and a more sustainable use of our planet’s resources closed today after three days of talks. During the summit, the role of Earth observation in sustainable development was highlighted.
A study of Drosophila embryos found that parental methylated histones are not transferred to daughter DNA. Rather, after DNA replication, new nucleosomes are assembled from newly synthesized unmodified histones.
When aggressive, malignant tumors appear in more than one location in the brain, patient survival tends to be significantly shorter than when the disease starts as a single tumor, even though patients in both groups undergo virtually identical treatmen…
Smoking is the most preventable risk factor for cardiac and lung disease and is expected to cause 1 billion deaths during the 21st century. Electronic cigarettes have been marketed in recent years as a safer habit for smokers, with several millions of …
People who drive commercial vehicles, such as buses, taxis, trucks and airplanes, could be incorrectly reporting their symptoms of sleep apnea due to their fears of endangering their employment, according to a new study.
Vitamin B12 is vital. Medical researchers have succeeded in decoding a novel cause of hereditary vitamin B12 deficiency. They have discovered an important gene that determines how vitamin B12 gets into cells. Their discovery enables the diagnosis and t…
A two-hour exposure to electronic devices with self-luminous “backlit” displays causes melatonin suppression, which might lead to delayed bedtimes, especially in teens.
Increased levels of depression as a result of discrimination could contribute to low birth weight babies.
When it comes to cooking, grocery shopping and playing with children, American moms with full-time jobs spend roughly three-and-half fewer hours per day on these and other chores related to their children’s diet and exercise compared to stay-at-home …
New research reassessing clinical data from trials, which investigate ways of treating side effects of therapy for prostate cancer, finds that tamoxifen, an anti-estrogen used to treat breast cancer, is also able to suppress gynecomastia and breast pai…
Some children, depending on other stressors, may have a harder time recovering from natural disasters.
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