How a 100-year-old vaccine for tuberculosis could help fight Covid-19

Tuberculosis and Covid-19 infection are two very different diseases — TB is caused by a type of bacteria while Covid-19 is caused by a virus, for starters. But the BCG vaccine might help people build immune responses to things other than TB, causing “off-target effects,” according to Dr. Denise Faustman, director of immunobiology at Massachusetts General Hospital and associate professor of medicine at Harvard Medical School.

People are luring Instacart shoppers with big tips — and then changing them to zero

“I was flabbergasted. I couldn’t believe it,” Arambula told CNN Business. Before accepting a “batch” — which can consist of one or a few orders from different customers — workers can see the items requested, the store location, the payment Instacart provides workers for the job, and the tip being offered. Instacart allows customers to change a tip for up to three days. Some workers told CNN Business tips can make up half of their income or more.

How do you spot the market bottom? One strategist weighs in

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PSA: There may be a limited number of Stadia account slots

Google is properly launching Stadia to the world over the next 48 hours, allowing folks who may have been on the fence about the idea of game streaming a chance to try it for themselves. However, like many things in life, there’s a bit of a catch, as there may technically be a limit on the number of free Stadia account slots at first.