ClimateWire: A whole new set of ungovernable pathogens are being loosed on the world's blood supplies. A warming climate has allowed blood-borne tropical diseases to flourish where once they were unheard of, and they're getting around.
The state of blood supplies became worrisome after tennis star Arthur Ashe's death from AIDS 20 years ago in 1993 -- the result of an HIV-tainted transfusion administered during a routine heart bypass operation in the late 1980s.
Hospitals and blood banks now routinely screen...