Calling the results "extremely surprising," researchers from the University of California, Santa Barbara and Texas A&M University report...
If you want to be surrounded by females on the prowl（徘徊） , it pays to be cool, at least if you are a male butterfly. In an unusual example of sex role...
The oceans became oxygen-rich as they are today about 600 million years ago, during Earth's Late Ediacaran Period. Before that, most scientists be...
When methicillin（甲氧西林） -resistant S. aureus (MRSA) is carried in the nose (nares鼻孔), it is a risk factor for an invasive infection, including a surgic...
Mayo Clinic researchers have determined the lifetime risk of developing rheumatoid arthritis（风湿性关节炎） and six other autoimmune rheumatic（风湿病的） diseases...
Long before the knights of medieval（中世纪的） Europe wielded flails（连枷） or martial artists（武术家） brandished nunchucks（双截棍） , it appears that a flightless p...
About one-third of the human population is infected with a parasite called Toxoplasma gondii（弓形虫） , but most of them don't know it. Though Toxopla...
The epic（史诗的） ocean-spanning（生成，长成） journeys of the gigantic leatherback（棱皮龟） turtle in the South Atlantic have been revealed for the first time thank...
Depression and diabetes appear to be associated with a significantly increased risk of death from heart disease and risk of death from all causes over...
A recent study by a team of researchers at the University of Arizona has tracked the incident of pathogens in biosolids（有机污泥） over a 19 year period in...