Instead of sending armed thugs who would face a handicap winning gang members' trust, Oakland sends an unarmed violence prevention worker.

People with Covid-19 symptoms months after the initial infection describe them. Various symptoms come and go; scientists still don't know why, or whether the people will recover some day.

Criticizing the "fetishisation of disagreement culture."

Systems that extract CO2 from the air should be used, but to avoid disaster we must also cut the real emissions.

The UK has fast and highly accurate antibody test to determine whether someone ever had Covid-19.