The expansion of the Roman empire to Greece 2,100 years ago coincided with a rise in lead pollution as a by-product of an increased demand for metals, according to some of the earliest traces of of ...

...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST FRIDAY... * WHAT...Stagnant air conditions will have potential to trap pollutants near the ground. * WHERE ...

Although the Arctic samples were less contaminated ... as a source of contamination and should be monitored in standard air pollution monitoring schemes. “We really need to know what effects ...

Following the passing of the Clean Air Act in the U.S. in 1970 ... Although ice core records show that Arctic lead pollution was up to 40-fold higher during the highest historical peak in the ...

President Trump’s first week in office included a flurry of executive orders with implications for Earth’s climate and ...

Using these measurements of lead deposited in the Arctic throughout the Roman era ... Lead exposure from air pollution, as calculated in the study, represents a lower limit of what people were ...

Lead air pollution spiked during this time and resulted ... The researchers first took measurements of lead deposited in three Arctic ice cores every year between 500 BCE and 600 CE using ...

Following the passing of the Clean Air Act in the U.S. in 1970 ... Middle Ages in the early 2nd millennium CE that lead pollution in the Arctic exceeded the sustained high levels of the Roman ...

The study authors analyzed three ice cores from the Arctic spanning the period 500 ... suggest that lead poisoning from background air pollution was not acute especially compared to other exposure ...