An affected Syrian man receives medical treatment after Assad regime forces allegedly conducted a chemical attack in eastern Ghota yesterday. Photo: Halil el-Abdullah / Anadolu Agency / Getty Images

"A chemical attack on a [Syrian] rebel-held town in eastern Ghouta has killed dozens of people, medical services reported, and Washington said the reports — if confirmed — would demand an immediate international response," per Reuters: "A joint statement by the medical relief organization Syrian American Medical Society (SAMS) and the civil defense service ... said 49 people had died in the attack late on Saturday." That death toll has risen since, though the exact number is unclear.

Who's to blame: Per the N.Y. Times: "Medical and rescue groups blamed President Bashar al-Assad’s government for the assault on the suburb east of the capital, Damascus."

This article has been updated to reflect new information.

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Updated 46 mins ago - Politics & Policy

Supreme Court clears way for first federal execution since 2003

Lethal injection facility in San Quentin, California. Photo: California Department of Corrections and Rehabilitation via Getty Images

The Supreme Court ruled early Tuesday that federal executions can resume, reversing a lower court decision and paving the way for the first lethal injection since 2003 to take place at a federal prison in Indiana, AP reports.

The big picture: A lower court had delayed the execution, saying inmates had provided evidence the government's plan to carry out executions using lethal injections "poses an unconstitutionally significant risk of serious pain."

2 hours ago - Health

More Republicans say they're wearing masks

Data: Axios/Ipsos poll; Chart: Andrew Witherspoon/Axios

Nearly two-thirds of Americans — and a noticeably increasing number of Republicans — say they’re wearing a face mask whenever they leave the house, according to the latest installment of the Axios-Ipsos Coronavirus Index.

Why it matters: A weakening partisan divide over masks, and a broad-based increase in the number of people wearing them, would be a welcome development as most of the country tries to beat back a rapidly growing outbreak.

Buildings are getting tested for coronavirus, too

Illustration: Eniola Odetunde/Axios

Testing buildings — not just people — could be an important way to stop the spread of the coronavirus.

Why it matters: People won't feel safe returning to schools, offices, bars and restaurants unless they can be assured they won't be infected by coronavirus particles lingering in the air — or being pumped through the buildings' air ducts. One day, even office furniture lined with plants could be used to clean air in cubicles.