US Secretary of State John Kerry said Sunday that those who ignore climate science do so at a risk to future generations, as UN experts unveiled the final chapter of a landmark climate report.
"Those who choose to ignore or dispute the science so clearly laid out in this report do so at great risk for all of us and for our kids and grandkids," Kerry said. "The longer we are stuck in a debate over ideology and politics, the more the costs of inaction grow and grow."