Cases of measles are on the rise as a cohort of unvaccinated children grows up.
People have to make countless decisions on a daily basis that involve some degree of risk, from boarding a plane to crossing the street. The trouble is most of us don't weigh risk well.
LSD is far safer than alcohol or tobacco, so why don't drug laws reflect it?
Our gut reactions to controversial issues like hydraulic fracturing can be powerful, but information can still change our minds.