Evolution of a single gene allowed the plague to adapt, survive and kill much of humanity over many centuries

Scientists have documented the way a single gene in the bacterium that causes bubonic plague, Yersinia pestis, allowed it to survive hundreds of years by adjusting its virulence and the

Medicaid: nuevo requisito federal de trabajo deja a estados sin mucho margen de maniobra

Cuando el presidente Donald Trump firmó una ley que agrega requisitos laborales para algunos beneficiarios de Medicaid, es posible que haya perjudicado a legisladores de al menos 14 estados que

‘I never thought I’d make it to this age’

BBC 100-year-old May O’Shea survived the blitz during World War Two “I never thought I’d make it to this age,” says 100-year-old May O’Shea. “I thought I would have died