On Friday, workers dumped more sandbags of zeolite, a radiation absorbing material, into the sea by Unit 3.

FORBES: Conditions May Be Deteriorating at Japanese Nuclear Power Plant

Argentina, Italy and the United Arab Emirates said they were working to install radiation detectors to check cargo for fissile material.

ECONOMIST: Disarmament and counter-proliferation

To put the reports coming out of Japan in perspective, the NRC limits occupational radiation exposure for adults working with radioactive material to 50, 000 microsieverts a year.

WSJ: Radiation's Effect Depends on Amount

The material gives off relatively low levels of radiation, but can be dangerous if ingested, inhaled in dust or if it enters the body through cuts or wounds.

BBC: Fury at uranium cancer denial

Since cosmic radiation alters surface composition, Curiosity can drill into rock to extract pristine material from below.

CNN: Curiosity opening Martian frontier?

The material Dr Demkowicz is looking for will be good at resisting damage from radiation.

ECONOMIST: New materials for renewable energy

The result is a material that is not only waterproof but is able to block out UV radiation from the sun to such an extent that it would rate a Ultraviolet Protection Factor (UPF) of 101.15 if the chart went that high.

FORBES: Chinese Researchers Develop Waterproof Cotton

This says that the exploding material (whatever it may be) races outwards and collides with interstellar dust and gas, producing radiation.

ECONOMIST: A symphony in gamma major