World Topics

Aug 8, 2014

Husband of U.S. Ebola patient surprised by critics

The husband of the second American aid worker recently diagnosed with Ebola and returned to the U.S. said he is astonished at the reactions of people who are critical of the couple for putting themselves in danger. David Writebol, who remains in Liberia, made ...

Aug 7, 2014

Oceans getting more tainted with man-made mercury

Levels of the metal mercury in much of the world’s oceans are double to triple what they were before the Industrial Revolution, a new study says. Researchers found there’s more mercury from human sources — mostly burning fossil fuels and mining for gold — ...

Aug 7, 2014

Study ties new gene to major breast cancer risk

It’s long been known that faulty BRCA genes greatly raise the risk for breast cancer. Now scientists say a more recently identified, less common gene can do the same. Mutations in the gene can make breast cancer up to nine times more likely to ...

Rosetta comet chaser reaches target after 10-year pursuit

Aug 7, 2014

Rosetta comet chaser reaches target after 10-year pursuit

After a journey of 6.4 billion km (4 billion miles), Europe’s unmanned Rosetta probe reached its destination Wednesday, a milestone in mankind’s first attempt to land a spacecraft on a comet. The decade-long trip was successfully completed with a seven-minute thrust that allowed Rosetta ...