The effort to cool Japan's Fukushima nuclear power plant by dropping seawater from helicopters and repairing water pumps is not going well, and engineers suggested today that the entire site might need to be buried under sand and concrete, as was done at Chernobyl 25 years ago. A plant official told reporters today, "It is not impossible to encase the reactors in concrete. But our priority right now is to try and cool them down first."

[Reuters; Image via AP]