Here are the news items:

• Researchers at the Salk Institute and UC San Diego have confirmed that COVID-19 is primarily a vascular disease, instead of a respiratory one.
• Scientists have used machine learning to identify four different types of Alzheimer’s. The findings could help explain why patients suffer different symptoms, and lead to new treatment ideas.
• The “jungle primary” in Texas’ 6th Congressional District gives us another chance to assess the value of a Donald Trump endorsement.
• Do progressive millennial attitudes explain the schism between corporate America and the Republican Party?
• Verizon is selling its media assets — including Yahoo, AOL, TechCrunch and Engadget — to the private equity firm Apollo Global Management for $5 billion.

PLUS: John interviews Walter Russell Mead, a columnist for The Wall Street Journal, about whether American decline (or lack thereof), whether China can escape the Thucydides Trap, and Putin’s plans for Ukraine.

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