It's no exaggeration to say the gene-editing technique CRISPR could revolutionize medicine. We look at a new milestone — a CRISPR treatment that edits a patient's DNA while it's still inside their body. NPR health correspondent Rob Stein explains how, if this treatment works, it could open up new avenues of treatment for diseases, like a genetic form of blindness, that were previously off limits to CRISPR.

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The Defense Department said it would contribute to the coronavirus pandemic response with hospital ships, field treatment centers and medical supplies. Congress also ramped up its response, with the Senate expected to pass a stimulus package Wednesday afternoon.

This episode: campaign correspondent Asma Khalid, congressional correspondent Kelsey Snell, and White House correspondent Tamara Keith.

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It actually behaves much like other viruses in that regard. NPR health correspondent Allison Aubrey has more on what we know, what we don't, and tips on how to keep surfaces clean. More from her reporting is here. Following all of NPR's coverage of the coronavirus pandemic here.

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Joe Biden now has secured more than half of delegates in the Democratic primary contest, making a Bernie Sanders comeback increasingly unlikely. Biden won primaries in Florida, Illinois, and Arizona on Tuesday night. Sanders gave a speech before voting had ended without mentioning the election at all. Instead, he used the address to debut his proposal to combat the economic impact of the coronavirus.

This episode: congressional correspondent Susan Davis, campaign correspondents Asma Khalid and Scott Detrow, and voting reporter Miles Parks.

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As schools across the U.S. shutter for weeks at a time, Short Wave looks at the science behind the decision. Plus, tips from a psychologist on how to cope with long, unexpected periods at home.

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President Trump gave a briefing on the coronavirus this afternoon in which he acknowledged that the coronavirus could cause disruptions for several more months. The stock market dropped more than 10 percent Monday.

Also, four states are scheduled to hold primaries tomorrow: Ohio, Florida, Arizona, and Illinois. But concerns about the spread of the coronavirus have made the prospect of in-person voting more complicated.

This episode: campaign correspondent Asma Khalid, White House correspondent Ayesha Rascoe, and national political correspondent Mara Liasson.

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That's the central question of an unprecedented lawsuit against a company whose chemical plant flooded during Hurricane Harvey in August 2017. Containers and trailers there caught fire, sending up a column of black smoke above the facility for days. Now Arkema (the company), an executive, and the local plant manager are facing criminal charges — recklessly emitting air pollution, and a third employee with assault.

Rebecca's latest reporting on the case is here.

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Former Vice President Joe Biden made big news, committing to have a woman as his running mate. Vermont Sen. Bernie Sanders said it would be his "strong tendency."

Biden and Sanders started Sunday night's debate with an elbow bump and responded to the coronavirus crisis. They got into detailed arguments over their records on a range of issues, from bankruptcy to immigration.

This episode: political reporter Danielle Kurtzleben, political correspondent Asma Khalid, and national political correspondent Mara Liasson.

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President Trump declared a national emergency Friday afternoon amid growing concern about the coronavirus outbreak across the United States. The move, widely expected, frees up $50 billion for states to deal with the crisis.

This week former Vice President Joe Biden and Vermont Senator Bernie Sanders both criticized President Trump for his handling of the pandemic. The virus has now reshaped how candidates will campaign ahead of the next round of primaries only days away.

This episode: Congressional correspondents Susan Davis and Kelsey Snell, White House correspondent Tamara Keith, and political correspondents Scott Detrow and Asma Khalid.

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There's a lot going on with the coronavirus. To keep you up to speed, we'll be doing more regular updates on the latest about the pandemic. Today, NPR science correspondents Jon Hamilton and Nell Greenfieldboyce discuss challenges in testing for the virus and how COVID-19 affects the elderly.

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