Fukushima Nuclear Disaster Never Affected Canadian Pacific Fish And Human Health

Radioactive contamination following a nuclear power-plant disaster in Japan never reached unsafe levels in the north Pacific Ocean for either marine life or human health, says a British Columbia scientist.

Chemical oceanographer Jay Cullen of the University of Victoria has monitored levels of contamination from radioactive isotopes, used in cancer therapies and medical imaging, since the meltdown of three reactors at the Fukushima Daiichi plant in 2011 following a tsunami triggered by an earthquake. Read more.

Bronze Age Burial Sites Suggest Women Spread Culture More Than Men

We humans are unusual amongst primates: We're bipedal, we have a virtuosic proficiency for language, we're able to understand the mental states of others. Recent studies have also found that the social behavior of the sexes in ancient humans were probably unlike those of what we most often see today in the great apes — in at least some early humans, the males stayed put in one geographic area while females traveled around looking for new mates. Read more.

New method for identifying carbon compounds derived from fossil fuels

Scientists at the National Institute of Standards and Technology (NIST) have developed a laboratory instrument that can measure how much of the carbon in many carbon-containing materials was derived from fossil fuels. This will open the way for new methods in the biofuels and bioplastics industries, in scientific research, and environmental monitoring. Among other things, it will allow scientists to measure how much of the carbon dioxide (CO2) in the atmosphere came from burning fossil fuels, and to estimate fossil fuel emissions in an area as small as a city or as large as a continent. Read more.

South Korea detects radioactive gas from North Korea bomb test

South Korea said on Wednesday traces of radioactive xenon gas were confirmed to be from a North Korean nuclear test earlier this month, but it was unable to conclude whether the test had been for a hydrogen bomb as Pyongyang claimed.

North Korea conducted its sixth nuclear test on Sept. 3, prompting theUN Security Council to step up sanctions with a ban on the reclusive regime's textile exports and a cap on fuel imports. Read more.

Natural gas industry wastewater pollution may linger for years

A new study finds the treated wastewater from Pennsylvania’s natural gas industry may pollute rivers, lakes, streams and creeks for longer than previously thought.

Penn State environmental engineering professor Bill Burgos and his colleagues analyzed sediment samples from the Conemaugh River, a dam-controlled reservoir in western Pennsylvania. The reservoir is downstream from two centralized waste treatment plants, which contaminants from hydraulic fracturing operations can pass through. The study shows the highest concentrations of pollutants were deposited in the reservoir’s sediments five to 10 years ago. Read more.