By Timothy Gardner WASHINGTON (Reuters) – Just under half of Americans support nuclear power to generate electricity, a waning industry the Biden administration has been trying to revitalize with billions of dollars in public spending as part of a plan to cut U.S. greenhouse gas emissions, a new Reuters/Ipsos poll showed. The poll, conducted last week, found 45% of Americans support nuclear power, 33% oppose it, and 22% are not sure how they feel about it. Of those supporting it, 48% cited energy reliability, 43% cited lower overall pollution, and only 39% said they favor it as a low-carbon en…