Leslie Dewan, a nuclear engineer, explains what worries her the most following Russia's attack on the Zaporizhzhia nuclear power plant, and how the plant differs from the one in Chernobyl. Plus, retired Gen. Wesley Clark offers perspective on why Russia attacked the facility. | CNN

The damaging effects of the light, heat, blast, and radiation caused by a nuclear explosion have been known to scientists since the end of the Second World War. But a nuclear conflict today would create more serious consequences for our planet. #EarthDay | Nuclear Threat Initiative | Facebook