Europe's nuclear reactors strain as climate crises worsens

Nuclear reactors in Europe are struggling to keep cool this summer, as climate change intensifies heat and drought. Record-low water levels in the Danube River are threatening nuclear power production in Hungary and Romania. France has reduced output at multiple plants. Chris Rosslowe, with the energy think tank Ember in London, tells The World's Host Marco Werman why the nuclear plants are so vulnerable and how Europe's power grid is holding up.