These nanoparticles then oxidise back into silicon oxides, drawing oxygen from the surrounding air.

ECONOMIST: Ball lightning

"Drawing a mass down within the blade of the piston itself compresses the air, " he said.

CNN: Where to store wind-powered energy? Under water!

In an ideal world Mr Brown would govern as best as he can till the late autumn, oversee the implementation of the speeded-up Kelly reforms, thus drawing the sting from the expenses scandal, and then call an election to clear the air.

ECONOMIST: Gordon Brown