Kali Hardig in critical condition in Arkansas
(Newser) -
Kali Hardig, 12, went swimming in a Little Rock, Ark., lake earlier this month—and, in a nightmare scenario, she's now battling a brain-eating parasite . Naegleria fowleri is a microscopic amoeba that gets to the brain through the nose, typically infecting people who go swimming in freshwater, CNN reports....