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Editor's note
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Air pollution has many harmful impacts on human health — particularly the fine particulates, much smaller than a human hair, which can penetrate deep into our lungs. Many studies have linked particle pollution to asthma, heart attacks, and premature deaths in people with heart or lung disease. New research from the University of Southern California points to another, more surprising connection: to dementia.
As immigration agents begin enforcing President Trump’s plans to deport millions of undocumented immigrants, UCLA historian Kelly Lytle Hernandez takes us back to where mass deportations all began – Chinese immigrants in the American west. “Historically speaking,” she writes, “immigration control is one of the least constitutional and most racist realms of governance in U.S. law and life.”
During Mardi Gras festivities this week, 25 million pounds of plastic beads will hit the streets of New Orleans. But their life doesn’t begin and end on the parade days leading up to this Tuesday: Beneath the sheen of the beads is a story that’s far more complex – one that takes place in the Middle East, China and the United States.
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Jennifer Weeks
Editor, Environment and Energy
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Top story
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Shutterstock.com
Caleb Finch, University of Southern California; Jiu-Chiuan Chen, University of Southern California
New research shows that exposure to fine particulate air pollution may double the risk of dementia in older women by increasing growth of beta-amyloid plaques in the brain.
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“How did we get to the point where 25 million pounds of toxic beads get dumped on a city‘s streets every year?”
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Recently
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Trump has reversed Obama's landmark guidance allowing transgender students the bathroom of their choice. Here's what you need to know about the controversy.
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Rebecca J. Romsdahl, University of North Dakota
With little action at the national level on climate change, state and city officials are taking the lead – but by emphasizing local benefits.
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Adam M. Sowards, University of Idaho
Republicans in Congress are working to kill an Obama administration rule that broadens public input into federal land use planning. Hunters, fishermen, hikers and environmental groups are opposed.
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Kenyatta R. Gilbert, Howard University
Since the 19th century, a long line of black women preachers set in motion a tradition that spoke against injustices and questioned patriarchal attitudes. Here's their story.
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Manimaran Govindarasu, Iowa State University; Adam Hahn, Washington State University
The power grid is increasingly computerized. That opens it to attacks and requires new defenses.
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