TINY KILLERS Acquiring one gene and one mutation allowed these plague bacteria, Yersinia pestis (shown in yellow in a flea’s digestive system in this colored scanning electron micrograph), to cause deadly pandemics.
DANGERS OF VAPING E-cigarettes have surpassed cigarettes as the most commonly used tobacco product among teenagers. Medical researchers are sounding the alarm.
Psychopaths often don’t fit movie stereotypes, but they share particular characteristics. New research shows that, contrary to popular thought, cognitive behavioral therapy can help some psychopaths stay out of prison.