He did pass his theory test, but there you go, he's got two.

BBC: Theo Walcott (left) and Aaron Lennon

As an Argentinian driving licence holder Tevez is permitted to drive in Britain for the first 12 months of his stay in the country, but is then required to apply for a provisional licence and pass the UK driving theory and practical test.

BBC: Manchester City's Carlos Tevez banned from driving

But that hard landing theory has not come to pass.

FORBES: China Economy Better Than Expected

Moreover, Dr Abrahamson's theory fails to explain how ball-lightning can pass through windows and other solid objects, as some claim.

ECONOMIST: Ball lightning

Over the last two years, as prices have soared, proponents of the Peak Oil theory--which argues that we will soon pass the point of being able to replace reserves as fast as they are consumed--have resurfaced in force.

FORBES: Really, Really Cheap Oil

In theory, disease could also spread if the animal microbes pass their drug-resistant genes to human bacterial strains.

BBC: Animals and antibiotics: the risks

Last year the EU passed a law requiring its members to draw up rules for CCS. In theory these should be in place within two years, although such deadlines often pass unmet.

ECONOMIST: Carbon capture and storage