Search results for nanograms

Plants & Animals Sep 17, 2024

A toxic chemical was blamed for killing thousands of Teesside crabs, but a study explains why pyridine isn't the culprit

In October 2021, thousands of dead and dying crabs and lobsters washed up along 45 miles (70km) of coastline in north-east England. This mass-mortality event coincided with the redevelopment of one of the UK's largest ports ...

Environment Aug 24, 2024

What exactly are 'forever chemicals'—and can we move beyond them?

The Australian parliament will conduct a national inquiry into the dangers of "forever chemicals."

Astronomy Aug 23, 2024

Professor proposes how a black hole in orbit around a planet could be a sign of an advanced civilization

In 1971, English mathematical physicist and Nobel-prize winner Roger Penrose proposed how energy could be extracted from a rotating black hole. He argued that this could be done by building a harness around the black hole's ...

Environment Jul 10, 2024

Europe's drinking water contaminated by 'forever chemical': NGOs

A large sample of European drinking water has detected a substance linked to "forever chemicals" used in pesticides and refrigeration, a coalition of non-governmental organizations said Wednesday.

Environment Jul 9, 2024

Lake and river foams study reveals high PFAS levels, even though underlying water may be less contaminated

According to a new study of rivers and lakes in Wisconsin, natural foams from these bodies of water contain much higher concentrations of per- and polyfluoroalkyl substances (PFAS) than the water below them.

Analytical Chemistry Jun 13, 2024

A first look inside radium's solid-state chemistry

For the first time in history, scientists have measured radium's bonding interactions with oxygen atoms in an organic molecule. Scientists have not measured this bonding before because radium-226 is available only in small ...

Plants & Animals Jun 12, 2024

Research finds dolphins with elevated mercury levels in Florida and Georgia

In a study with potential implications for the oceans and human health, scientists have reported elevated mercury levels in dolphins in the U.S. Southeast, with the greatest levels found in dolphins in Florida's St. Joseph ...

Environment Jun 5, 2024

Irrigation with treated wastewater and sewage sludge introduces tire additives into leafy vegetables, study finds

The presence of drug residues in commercially sold fruit and vegetables has already been scientifically investigated many times. However, chemical substances from tire wear, so-called additives, also find their way into the ...

Environment Apr 8, 2024

New study suggests we're likely underestimating the future impact of PFAS in the environment

Per-and poly-fluoroalkyl substances—commonly known as PFAS—are a group of over 14,000 human-made chemicals that have been popular since the 1950s for their diverse skills in resisting heat, water, grease and stains.

Ecology Feb 20, 2024

Even very low levels of pesticide exposure can affect fish for generations, study finds

Fish exposed to some pesticides at extremely low concentrations for a brief period of time can demonstrate lasting behavioral changes, with the impact extending to offspring that were never exposed firsthand, a recent study ...

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