Nearly half of all adults in the U.S. have received at least one does of Covid-19 vaccine // Israel has more than half of its country fully vaccinated and has dropped its outdoor mask mandate // Bitcoin experience a flash crash over the weekend // Biden’s $2.3 trillion Amtrak plans would include a train from California to Las Vegas // Caitlyn Jenner deciding soon on whether to run for governor // An aquarium in Georgia reports that some of their Asian small-clawed otters have contracted Covid-19.