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Cities, states and companies scramble to decide how to update mask mandates after new CDC guidelines. Israel escalates its military response in Gaza. And a single piece of steel on a Memphis bridge has upended shipping routes.

The CDC tells fully vaccinated Americans that masks are no longer necessary in most situations. New reporting shows that Colonial paid a ransom worth millions of dollars to cyber attackers. And Bitcoin prices dive amid criticism from environmentalists.

The CDC green lights Pfizer's COVID vaccine for 12 to 15 year-olds. President Biden invites Republicans to the White House to talk infrastructure. And violence breaks out within Israel as Jews and Palestinians clash.

Republicans prepare to oust Liz Cheney from her role in House leadership. Battles intensify in Israel and the Gaza Strip. And lines pile up at gas stations, putting pressure on supplies and prices.

The FDA adds 12 to 15 year old children to Pfizer's emergency use authorization. Several Republican governors cut back unemployment benefits after damaging jobs report. And a hail of rocket fire in Jerusalem escalates tensions in the Middle East.

A pipeline supplying half the East Coast is shut down after a ransomware attack, worrying national security experts and potentially driving up prices. A disappointing jobs report re-sets expectations for an economic recovery. And vaccine makers are preparing for a world in which Americans need annual COVID booster shots.

Florida becomes the latest state to enact an aggressive series of voting restrictions. The Biden administration works to reunited separated immigrant families, while still trying to stem the tide of new migration. And the American birth rate hits a 40-year low.

The Biden Administration signals support for a plan in which foreign companies can copy American vaccines. A Facebook oversight panel tells the company its policies for banning users are "arbitrary." And arrest records show as many as 1 out of 10 Capitol invaders have served in the military.

As the US vaccination rate slows, herd immunity looks increasingly unlikely, but scientists say it may not matter. Donald Trump eyes a return to social media as debate over his election lies divides the GOP. And America's top diplomat joins allies at the first in-person summit in years.

Pouncing on improving numbers and loosened guidelines from the CDC, many states are rapidly re-opening. India's cases top 400,000 a day raising global infections to unprecedented heights. And a trial begins pitting Apple against one of the most popular video games in the world.