Signs of dehydration include fatigue, flushed skin, heat intolerance, light-headedness and dark colored urine.

FORBES: Death from Dehydration

But he thinks that American sports have been too contaminated by big-headedness and commercialism.

ECONOMIST: The inner cities

Yet the greatest credit should go to the resilience and level-headedness of the region's own politicians and citizens.

ECONOMIST: Eastern Europe's economies

They're discarded only after the shock of actual events graphically displays their wrong-headedness.

FORBES: Fact and Comment

This in a city and at a time where all forms of violence or injury or hot-headedness are strictly forbidden.

CNN: Preparing to cover The Hajj

By the time she reached adulthood, I had to get blunt with her about what she could use all her bull-headedness, moxie and talent to do.

FORBES: Taking the Leap: Working at What You Love

Listen for instance to Ami Ayalon, once head of the Shin Bet security service, describing in an interview with Le Monde the wrong-headedness of current Israeli policy.

ECONOMIST: Israeli dissent

Often, it seems, barriers are erected out of sheer bull-headedness.

CNN: GIVE PEACE A CHANCE

Not to be outdone in pointy-headedness, the Treasury committee hears from the chairman of the Independent Commission on Banking Sir John Vickers about its proposals to insulate high risk banking activities from "utility" high street banks.

BBC: Viewing guide: The coming week's highlights in Parliament

In the other studies, there was no evidence of adverse effects on kidney and liver function, no reports of light-headedness or loss of consciousness, no evidence of fluid or electrolyte loss that might contribute to heat stroke.

FORBES: Is A Popular Dietary Supplement A Killer Or A Scapegoat?

Mr Prescott's reputation for hot-headedness remains.

BBC: The John Prescott story