FedEx shooting is 45th mass shooting in U.S. last month; Unsettling week after use of force questioned in Adam Toledo, Daunte Wright & George Floyd deaths; Scientific American: We’re making so many masks a year they could cover the entire area of Switzerland; White House backtracks on refugee decision, says Biden will announce new increased cap by May 15; CDC: More than 30% of adults in the U.S. are fully vaccinated;

Eight killed, several injured in America’s latest mass shooting; Sources: FBI previously investigated FedEx suspect after family member reported potential for violence; FBI: “Premature to speculate” on FedEx shooter’s motive; ER doctor on how “gun violence affects literally all of us”; Officials give update on FedEx mass shooting investigation; Police identify suspected FedEx shooter as former employee; WH plans to release $1.7 billion to fight Covid variants; CDC advisers meeting again next week to review J&J vaccine pause; Researchers begin testing Pfizer vaccine on kids as young as two; J&J scientists say there isn’t enough evidence to link vaccine to rare blood clots; Discarded masks filling up landfills, littering oceans; Recycling company VP: PPE has created a “monster waste stream”; Cleveland clinic sterilizing masks, turning PPE into fuel, reusing hand sanitizer bottles to reduce waste; Russia sanctions eight U.S. officials and expels diplomats in retaliation for Biden’s sanctions;

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