World Topics

Threshold level for lead exposure may be cut

Jan 7, 2017

Threshold level for lead exposure may be cut

The U.S. Centers for Disease Control and Prevention is considering lowering its threshold for elevated childhood blood lead levels by 30 percent, a shift that could help health practitioners identify more children afflicted by the heavy metal. Since 2012, the CDC, which sets public ...

Massive Antarctic ice block set to break off

Jan 7, 2017

Massive Antarctic ice block set to break off

A massive ice block nearly 100 times the area of Manhattan is poised to break off Antarctica’s Larsen C ice shelf, scientists reported Friday. A slow-progressing rift suddenly grew by 18 kilometers (11 miles) at the end of December, leaving the finger-shaped chunk — ...

Jan 7, 2017

Human brain's face recognition develops into adulthood: studies

The part of the human brain involved in face recognition keeps developing into adulthood, a pair of new studies found, surprising scientists who thought brain tissue growth stopped in early childhood. Researchers led by Kalanit Grill-Spector, a psychology professor at Stanford University, examined the ...

Unlucky polar bears beset by toxins too, study says

Jan 6, 2017

Unlucky polar bears beset by toxins too, study says

Polar bears just can’t catch a break. Already struggling to cope with climate change, the giant Arctic carnivores also face a chemical poisoning risk 100 times above levels considered safe for adult bears, according to a study released Thursday. For bear cubs feeding on ...

Jan 5, 2017

Giving peanut-based foods to babies early prevents allergies

Most babies should start eating peanut-containing foods well before their first birthday, say guidelines released Thursday that aim to protect high-risk tots and other youngsters, too, from developing the dangerous food allergy. The new guidelines from the National Institutes of Health mark a shift ...

NASA asteroid probes to study early solar system

Jan 5, 2017

NASA asteroid probes to study early solar system

NASA on Wednesday announced two unmanned asteroid missions designed to study one of the earliest eras in the history of the solar system. They have been dubbed Lucy and Psyche, and the U.S. space agency hopes to launch them in 2021 and 2023, respectively. ...