For years at global climate summits, nuclear energy was seen by many as part of the problem, not part of the solution. Sama Bilbao y Leon has been attending the annual United Nations climate change talks since 1999, when she was a student of nuclear engineering. And for most of that time, she said, people didn’t want to discuss nuclear power at all. At last year’s climate conference in the United Arab Emirates, 22 countries pledged, for the first time, to triple the world’s use of nuclear power by midcentury to help curb global warming. At this year’s summit in Azerbaijan, six more countries signed the pledge.
