In the coming weeks, the Environmental Protection Agency (EPA) is expected to issue a regulation that will extend 1 million years into the future.
The timescale of the regulation, which deals with the disposal of power plant nuclear waste, is unprecedented territory for the EPA.
"This will be the only rule that applies for such a long duration into the future," says Elizabeth Cotsworth, the EPA director of radiation and indoor air. "Most EPA rules apply for the foreseeable future -- five or six generations. This rule is for basically 25,000 generations."