Milky Way's galactic neighbor, Andromeda. This is the largest number of possible black holes found in a galaxy outside of our own.
Newly discovered genetic variations may help predict breast cancer risk in women who receive preventive breast cancer therapy with the selective estrogen receptor modulator drugs tamoxifen and raloxifene.
The first complete chemical analysis of feathers from Archaeopteryx, a famous fossil linking dinosaurs and birds, reveals that the feathers were patterned— light in color, with a dark edge and tip— rather than all black, as previously thought.
Large-scale experiments where scientists spray iron into oceans, literally fertilizing phytoplankton, have created huge man-made algal blooms. The experiments are controversial and, according to a new study, perhaps not as effective as expected.
A dramatic drop in the price of solar power technology last year helped the continued growth of renewable energy.
Scientists have developed a novel way to turn sea water into hydrogen, for a sustainable and clean fuel source.
Britain will start regulating electronic cigarettes and other products containing nicotine as medicines.
Researchers have reported the first observation of the "spin Hall effect" in a Bose-Einstein condensate, a cloud of ultracold atoms acting as a single quantum object.
Men who experience restless legs syndrome (RLS) may have a higher risk of dying earlier.
A team of researchers is recommending clinical guidelines that will cut the post-surgical infection rate for staph bacteria— including MRSA— by 71 percent and 59 percent for a broader class of infectious agents known as gram-positive bacteria.
Astronomers using the Swiss 1.2-meter Euler telescope have found a new type of variable star.
Raza Naqvi, from the Univ. of Toronto, a team found no evidence that drugs, herbal products or vitamin supplements help prevent cognitive decline in healthy older adults.
Saliva may be the key to explaining the age and sex bias exhibited by influenza and other diseases.
Using star-shaped block co-polymer structures as tiny reaction vessels, researchers have developed an improved technique for producing nanocrystals with consistent sizes, compositions and architectures.
An inexpensive new material made of clay and papaya seeds removes harmful metals from water and could lower the cost of providing clean water to millions of people in the developing world.