U.S. beaches and waterways are often closed to human contact when tests indicate an increase in E. coli, usually after heavy rains overwhelm sewage systems. However, the concentration of these common bacteria is not a reliable indicator of viruses in the water, which present a greater danger of causing illness in humans.
Analysis of ancient human skulls found in southeastern Brazil are providing new insights into the complex narrative of human migration from our origins in...
Three decades ago, astronomers spotted one of the brightest exploding stars in more than 400 years. The titanic supernova, called Supernova 1987A (SN 1987A), blazed with the power of 100 million suns for several months following its discovery on Feb. 23, 1987.
While the topic of sex is less taboo than it was a generation ago, that doesn't necessarily mean people are having more of it. According to a new study, Americans who were married or living together had sex 16 fewer times per year in 2010-2014 compared to 2000-2004. The survey also found that overall, Americans had sex about nine fewer times per year in 2010-2014 compared to 1995-1999.
Researchers have developed a mathematical formula based on the rhythmic movement of a sperm's head and tail, which significantly reduces the complexities of understanding and predicting how sperm make the difficult journey towards fertilizing an egg.
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