Science Quickly

Based on trawling samples and visual observations of plastic debris, computer models calculate that some 5.25 trillion particles of plastic—about 269,000 tons—may litter the world's oceans. Christopher Intagliata reports Learn more about your ad choices. Visit megaphone.fm/adchoices

Researchers estimated alcohol consumption at a senior center by putting out recycling bins and counting the bottle contents. Karen Hopkin reports   Learn more about your ad choices. Visit megaphone.fm/adchoices

A study following teens who had summer jobs found violent crime in that population almost cut in half, during and following the employment. Cynthia Graber reports   Learn more about your ad choices. Visit megaphone.fm/adchoices

Working-class kids ask for help from teachers less often and less aggressively than do their middle-class counterparts   Learn more about your ad choices. Visit megaphone.fm/adchoices

Researchers working in New York City found that hungry urban arthropods help dispose of tons of edible trash. Allie Wilkinson reports Learn more about your ad choices. Visit megaphone.fm/adchoices

The Wall Street Journal found in 2010 that an NFL game has just 11 minutes of actual action. Eight decades earlier, Scientific American found just about the same thing   Learn more about your ad choices. Visit megaphone.fm/adchoices

Paleoanthropologist Donald Johanson's first glimpse of Lucy came on November 24, 1974 Learn more about your ad choices. Visit megaphone.fm/adchoices

Importation of a frost-resistant barley from the Fertile Crescent to Tibet some 3,600 years ago is associated with the advent of settlements at 3,000 meters and more above sea level. Cynthia Graber reports Learn more about your ad choices. Visit megaphone.fm/adchoices

A new study suggests bed bugs can transmit Chagas disease to mice—but the same thing is unlikely to happen in humans. Christopher Intagliata reports Learn more about your ad choices. Visit megaphone.fm/adchoices

Microbicides that kill HIV in the lab often fail in clinical trials. A study finds that semen may be the culprit. Cynthia Graber reports   Learn more about your ad choices. Visit megaphone.fm/adchoices

Alcohol's supposed benefit to the heart may only be available to people with the right genes. Christopher Intagliata reports Learn more about your ad choices. Visit megaphone.fm/adchoices

Some sounds from the Rosetta Mission team today after they succeeded in landing on Comet 67P/Churyumov–Gerasimenko. Steve Mirsky reports   Learn more about your ad choices. Visit megaphone.fm/adchoices

Nonsterile lab reagents and DNA extraction kits add their own assortment of DNA to microbiome samples. Christopher Intagliata reports Learn more about your ad choices. Visit megaphone.fm/adchoices

Because the chemical signature of water on Earth matches the signature of water in an ancient group of asteroids called eucrites, it means that Earth might have had water much earlier than previously thought. Julia Rosen reports   Learn more about your ad choices. Visit megaphone.fm/adchoices

Chimps choose an overnight camp site based on the likelihood of finding calorically rich food nearby. Karen Hopkin reports Learn more about your ad choices. Visit megaphone.fm/adchoices

Mexican free-tailed bats make calls that interfere with fellow bats’ echolocation, causing them to miss their insect targets. Christopher Intagliata reports Learn more about your ad choices. Visit megaphone.fm/adchoices

November 5th marks the 50th anniversary of the launch of Mariner 3, America’s first mission to Mars, which was lost in space. Steve Mirsky reports   Learn more about your ad choices. Visit megaphone.fm/adchoices

Thousands of small children swallow tiny batteries each year. A new battery coating could protect kids from internal burns and still allow the batteries to work. Cynthia Graber reports   Learn more about your ad choices. Visit megaphone.fm/adchoices

Mosquitoes that harbor a soil microbe called Chromobacterium Csp_P have a harder time catching dengue virus and the malarial parasite. Christopher Intagliata reports Learn more about your ad choices. Visit megaphone.fm/adchoices

The ability to engage in extended hibernation might be what saved ancestral mammals from extinction at the end of the Cretaceous period. Karen Hopkin reports Learn more about your ad choices. Visit megaphone.fm/adchoices

Christo Wilson, a computer scientist at Northeastern University, says prices online are "super subjective" and vary according to your past clicks and purchases or whether you are shopping on a mobile phone. Christopher Intagliata reports. Learn more about your ad choices. Visit megaphone.fm/adchoices

The bacterium Clostridium scindens, a member of the gut’s microbiome, appears to ward off the hospital-acquired infection C. difficile. Christopher Intagliata reports Learn more about your ad choices. Visit megaphone.fm/adchoices

Topping out at about 20 kilograms, a coyote has to be able to hunt both smaller and bigger prey, and avoid being prey itself, a combination that selects for intelligence. Steve Mirsky reports   Learn more about your ad choices. Visit megaphone.fm/adchoices

In areas with few herbivores acacia plants don't bother to churn out many of the off-putting thorns. Cynthia Graber reports Learn more about your ad choices. Visit megaphone.fm/adchoices

Primatologists spent almost 1,100 hours watching lemurs do their business on their designated tree and concluded that urine and glandular secretions serve as posted messages. Steve Mirsky reports Learn more about your ad choices. Visit megaphone.fm/adchoices