Yet another reason to worry about rising global temperatures: Brain-eating amoebas are apparently thriving in warmer water in lakes and other popular swimming spots. The amoebas have killed a record six people nationwide this year, a trend that’s expected to get worse as the world gets hotter. The amoebas swim up your nose and eat away at your brain until you die. Experts warn against performing somersaults in shallow water where the bugs hang out. Nose plug sales are expected to skyrocket…