Earlier this week the Japanese government announced plans to spend $500 million on a new effort to stabilize the Fukishima Daiichi nuclear plant, the site of the worst nuclear accident since Chernobyl.
Though it's been more than two years since an earthquake and tsunami crippled that plant, the containment and clean-up effort remains incomplete.
Much of the money now being designated for clean-up will go towards constructing a frozen wall to prevent groundwater from reaching the contaminated buildings.
Arjun Makhijani is an engineer specializing in nuclear fission and the president of the Institute for Energy and Environmental Research. He joins The Takeaway to explain how effective a frozen wall would be and his concerns about the plan.