Weapons-grade plutonium can fuel nuclear reactors known as mixed oxide reactors, but none of these exist in the U.S.

Companies say it’s a better way to dispose of the Cold War-era material — and fix a shortage of nuclear fuel. But the plan ...

The U.S. government is sitting on dozens of tons of weapons-grade plutonium. It's hoping startups can find a use for it.

The Trump administration plans to supply the nuclear power industry with plutonium from decommissioned warheads dating back to the Cold War. The plan could provide 20 metric tons of plutonium fuel to ...