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Welcome to Sunday! The top five articles on our site over the past week are displayed below.
Editor’s pick: Over the past week, western wildfires have spread smoke and haze over the entire United States, triggering unhealthy air alerts as far away as Philadelphia. In an article we published earlier this month, environmental toxicologist Luke Montrose of Boise State University explains how wildfire smoke differs from other forms of pollution – and why under certain conditions, it can be more dangerous to human
health.
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Put into context, the benefits of vaccination still far outweigh the risks of rare adverse events.
PenWin/iStock via Getty Images Plus
Justin Vesser, University of Virginia
Ongoing tracking is meant to spot very rare risks – like the connection between the Johnson & Johnson shot and Guillain-Barré syndrome. And it relies on public reporting.
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Part of a portable nuclear power plant arrives at Camp Century in 1960.
Bettmann Archive/Getty Images
Paul Bierman, University of Vermont
Nearly 60 years after a radiation-leaking reactor was removed from a US Army base on the Greenland ice sheet, the military is exploring portable nuclear reactors again.
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Jean-Luc Margot, University of California, Los Angeles
Billions of galaxies are in the universe, with billions of stars in every galaxy. Could billions of planets be out there too?
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Thomas Ankersen, University of Florida
In principle, some portion of the shoreline is public land along virtually all US coasts. But these can sometimes overlap with private property interests, creating confusion and conflict.
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Peter Chin-Hong, University of California, San Francisco
As Los Angeles County again mandates masking indoors – even for the fully vaccinated – local health officials in the U.S. are closely eyeing their own COVID-19 vaccination and infection rates.
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