
Is herd immunity for Covid-19 still possible?
CNN
This time last year, the brand new, stunningly effective Covid-19 vaccines were rolling out across the country, injecting a strong note of optimism into the United States' once fumbling pandemic response.
Millions of people were lining up daily to get their shots. Instead of the steady drumbeat of cases, hospitalizations and deaths, we were tracking a new number: the percentage of Americans who had been vaccinated. This number, we believed, was our best chance to beat the virus.

Federal regulators repeatedly granted appeals to remove Camp Mystic’s buildings from their 100-year flood map, loosening oversight as the camp operated and expanded in a dangerous flood plain in the years before rushing waters swept away children and counselors, a review by The Associated Press found.

Two of the most senior figures in the US government — Secretary of State Marco Rubio and the White House chief of staff — have been impersonated in recent weeks using artificial intelligence — a tactic that harnesses a rapidly developing technology that cybersecurity experts say is becoming the “new normal” in terms of cheap and easy scams targeting senior US officials.