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Clay layers and distant pumping trigger arsenic contamination in Bangladesh groundwater

To avoid arsenic contamination, many Bangladeshi households access water via private wells drilled to 300 feet or less, beneath impermeable clay layers. Such clay layers have been thought to protect groundwater in the underlying aquifers from the downward flow of contaminants. However, a new study suggests that such clay layers do not always protect against arsenic, and could even be a source of contamination in some wells.

Clay layers and distant pumping trigger arsenic contamination in Bangladesh groundwater

(Earth Institute at Columbia University) To avoid arsenic contamination, many Bangladeshi households access water via private wells drilled to 300 feet or less, beneath impermeable clay layers. Such clay layers have been thought to protect groundwater in the underlying aquifers from the downward flow of contaminants. However, a study published in Nature Communications this week suggests that such clay layers do not always protect against arsenic, and could even be a source of contamination in some wells.

California’s Bullet Train A Bigger Mess Than Anyone Realized

Going back to early 2018, Ed Morrissey was already sounding the alarm about the way that California’s vaunted high-speed rail line, affectionately known as the bullet train, was imploding as the world watched. By that point, cost estimates for the…

How a Trump Insider Embeds Climate Denial in Scientific Research – The New York Times

An official at the Interior Department embarked on a campaign that has inserted misleading language about climate change — including debunked claims that increased carbon dioxide in the atmosphere is beneficial — into the agency’s scientific reports, according to documents…

A Trump Insider Embeds Climate Denial in Scientific Research – The New York Times

An official at the Interior Department embarked on a campaign that has inserted misleading language about climate change — including debunked claims that increased carbon dioxide in the atmosphere is beneficial — into the agency’s scientific reports, according to documents…

Bait & Switch: Gov. Newsom Diverts Gas Tax Money For His Climate Goals

Gov. Gavin Newsom is coming under fire for an executive order he signed that redirects voter-approved gas taxes initially designed to expand transportation and infrastructure repair projects to “climate change”-related projects not authorized by the voters. SB1, proposed by Senate…

What you can see on fee-free days at U.S. national parks this year

The United States has so many national parks and protected wilderness areas to explore, but some of those spots have entrance fees or activities fees. While the fees help to support the sites, they can sometimes sting the wallet. Luckily,…

Report: Dem’s Fracking Ban Would Be ‘Catastrophic’ To US Economy

Most of the top Democratic presidential contenders have called for eliminating hydraulic fracturing, but such a ban would be “catastrophic” for the U.S. economy, according to a report released Thursday. The U.S. Chamber of Commerce’s Global Energy Institute found that…

Salmon lose diversity in managed rivers, reducing resilience to environmental change

The manipulation of rivers in California is jeopardizing the resilience of native Chinook salmon. It compresses their migration timing to the point that they crowd their habitats. They may miss the best window for entering the ocean and growing into adults, new research shows.

Giant hybrid tumbleweed spreads in California

California has enough to worry about on the invasive species front, thank you very much, but it’s now also home to a monster hybrid tumbleweed. Researchers at the University of California, Riverside, have discovered that two large invasive species of…