Scientists are officially debunking the myth that megalodon sharks still exist. The whale-eating monsters became extinct about 2.6 million years ago. “I was drawn to the study of Carcharocles megalodon’s extinction because it is fundamental to know when species became extinct to then begin to understand the causes and consequencesContinue Reading

A new study suggests that two sets of dynamics initiate and perpetuate the kinds of leaps of faith firefighters and others in high-risk occupations routinely take: supporting and sustaining. The findings convey what goes into a person’s ability to make critical trust-related judgments. The study also has relevance and managerial implicationsContinue Reading

Homo sapiens were able to thrive because they could generalize across different kinds of environments, but then also rapidly specialize upon encountering specifically challenging environments, say researchers. They call this new ecological role the “general specialist.” The Homo sapiens that migrated out of Africa about 80,000 years ago settled withContinue Reading

A new predictive model that examines spore-forming bacteria and when they’ll emerge may make the “sell-by” and “best-by” dates on milk cartons more meaningful and accurate, according to research. “Putting dates on milk cartons is a big issue, because consumers often discard the milk if it is past the sell-byContinue Reading

Astronomy students sorted through 101 clouds of gas to find those that may be in the first phases of forming massive stars. “There’s still a pretty open question in astronomy when it comes to massive star formation,” says Jenny Calahan, a recent graduate of the University of Arizona. “How doContinue Reading

Scientists have deduced that the Andromeda galaxy, our closest large galactic neighbor, shredded and cannibalized a massive galaxy two billion years ago. Even though it was mostly shredded, this massive galaxy left behind a rich trail of evidence: an almost invisible halo of stars larger than the Andromeda galaxy itself,Continue Reading

Biologists warn that federal plans to build a wall along the US-Mexico border could severely threaten some of the unique species that live there—and even push some to extinction in the US. Borderlands are synonymous with desolation, but the Mexico-US divide is something altogether different, researchers say. The nearly 2,000-mile-longContinue Reading

Despite overall lower levels of harmful emissions from power plants and vehicles throughout the year, winter air pollution in the Eastern United States remains high. A new study explains why. Summer used to be the poster child for haze-containing particles that cause asthma, lung cancer, and other illnesses, researchers say.Continue Reading

Dogs not only go out of their way to comfort their upset owner, but will overcome obstacles to do it quickly, experiments show. In the journal Learning & Behavior, researchers show that dogs with strong bonds to their owners hurried to push through a door when they heard their personContinue Reading