World Topics

Study of past warming signals major sea level rise ahead

Scientists who study patterns of natural shifts in the Earth’s climate said Thursday they have uncovered a “worrisome” signal that major sea level rise could be on the way. The findings in the journal Science show that ocean surface temperatures during the Earth’s last warm period, some 125,000 years ago, ...

Jan 22, 2017

Ants are expert navigators, even walking backwards: study

Despite their tiny size, ants are sophisticated navigators that can find their way even while walking backwards, and these skills could help inspire better robots, scientists say. The findings in this week’s edition of the journal Current Biology are based on a colony of ...

Jan 22, 2017

Massive Antarctic ice shelf ready to break apart

A chunk of ice half the size of Jamaica which is breaking away from West Antarctica is now attached to its parent ice shelf just by a thread, scientists reported Friday. Covering 5,000 square kilometers (1,900 square miles) and nearly 100 stories deep, the ...

Weekend exercise on a par with daily workouts

Jan 21, 2017

Weekend exercise on a par with daily workouts

People who exercise mainly on the weekends may reap significant health and survival benefits, on par with people who work out more regularly, researchers said on Jan. 9. Currently, experts recommend 150 minutes of moderate physical activity per week, or 75 minutes of vigorous ...

Jan 20, 2017

Germany legalizes cannabis for medicinal purposes

Germany’s lower house of parliament on Thursday passed a law that legalizes the use of cannabis for medicinal purposes for people who are chronically ill. Those suffering from serious illnesses such as multiple sclerosis and chronic pain or a lack of appetite or nausea ...

Jan 20, 2017

Prostate biopsies could be avoidable with MRIs: study

A quarter of men suspected of having prostate cancer could avoid invasive and potentially dangerous biopsies with the help of MRI scans, researchers reported Friday. Magnetic resonance imaging (MRI) could also reduce the number of men over-diagnosed with the disease by 5 percent, they ...

$460 million vaccine initiative launched to 'outsmart' viruses

Jan 20, 2017

$460 million vaccine initiative launched to 'outsmart' viruses

With the world still reeling from outbreaks of deadly Ebola and baby-deforming Zika, governments and charities launched a $460-million (431 million-euro) initiative Thursday to “outsmart” infectious epidemics. The goal is to develop vaccines with which to contain outbreaks before they become global health emergencies, ...

Climate science bedeviled by 'tipping points'

| Jan 19, 2017

Climate science bedeviled by 'tipping points'

Of the many things that keep climate scientists awake at night, tipping points may be the scariest. To start with, these thresholds for deep, sometimes catastrophic change in the complex web of Earth’s natural forces, caused by man-made global warming, are largely invisible. You ...

Golden-headed moth species named for Trump

Jan 18, 2017

Golden-headed moth species named for Trump

A Canadian researcher has discovered a new species of moth native to Southern California and Baja California. The insect, which measures just over a centimeter wide, is visually striking. Golden flakes cover its head, which the researcher likens to the hairdo of U.S. President-elect ...