World Topics

Rosetta passes milestone as it tracks comet's sun run

Aug 14, 2015

Rosetta passes milestone as it tracks comet's sun run

The European space probe Rosetta captured a range of scientific data Thursday as it trailed an ancient comet past the sun which could help scientists better understand the origins of life on Earth. During its run before the sun the probe collected particles and ...

Aug 14, 2015

Fifteen U.S. states seek to block EPA carbon rule

Fifteen state attorneys general petitioned a federal court in Washington on Thursday to block new U.S. rules to curb carbon emissions from power plants, in the first of several expected legal challenges to the Obama administration measure. States that oppose the Environmental Protection Agency’s ...

China 'exporting' ozone pollution to US: study

Aug 12, 2015

China 'exporting' ozone pollution to US: study

Progress slashing unhealthy ozone in the western United States has largely been undone by pollution wafting across the Pacific from China, according to a study published Monday. Scientists have long suspected this might explain why ozone levels along the U.S. west coast remained constant ...

Aug 12, 2015

Parasite yet another threat to already troubled amphibians

Scientists have identified a new problem for amphibians, which are already shrinking in numbers: A parasite is infesting tadpoles worldwide. The family of parasites, related to a bug that attacks oysters, has been found in the livers of frogs and tadpoles on three continents ...