All Sauce from Weekly Sauce:

Summer can sizzle in the city, but a new report finds urban living is getting hotter than ever before. The research shows that city dwellers may be suffering from what scientists call an urban “heat penalty” — an extra two to six hours a day of uncomfortably hot summer temperatures. And most of those sweltering…  read on >  read on >

Think what happens online stays online? Think again. According to new research, a social media diss can leave people feeling genuinely hurt and ostracized. “Social media ostracism means being excluded or ignored online on social media networks like Instagram, Facebook or Twitter,” explained lead study author Christiane Büttner. She’s a PhD candidate in the department…  read on >  read on >

Researchers who say they have discovered what causes kids to have “chalky teeth” predict it could lead to new ways to fight it and cut cavities by half. One in five children have chalky teeth — visible as discolored enamel spots — which can cause severe toothache and decay, sometimes resulting in abscesses, extractions and…  read on >  read on >

President Joe Biden plans to announce his latest battle plan for fighting the formidable Omicron variant on Tuesday, with measures to include distributing 500 million free rapid COVID tests to the public, opening new federal testing sites, sending out hundreds of federal vaccinators, and providing 1,000 military medical personnel to bolster beleaguered hospitals. The measures,…  read on >  read on >

In record time, the Omicron variant has become the dominant variant in the United States, accounting for 73% of new infections last week, the U.S. Centers for Disease Control and Prevention said Monday. That rate suggests that there were more than 650,000 Omicron infections in the United States last week, the Associated Press reported. CDC…  read on >  read on >