When you're irritated by something, your stress hormones rise and your concentration levels decrease.

CNN: Fuzzy brain? Improve your attention span

Chris Cohen's goal for the home side settled the game but O'Neil is adamant the only difference between the two sides is their levels of concentration.

BBC: Errors cost Middlesbrough points - Gary O'Neil

England may have been trying to knock his helmet onto the stumps, as almost happened in the first innings, but his chin strap remained as resolute as his levels of concentration.

BBC: South Africa earn draw at Lord's

Whether that boom will happen quickly enough to stop the concentration of carbon dioxide in the atmosphere reaching dangerous levels is moot.

ECONOMIST: A fundamental change is coming sooner than you might think

The continuing upward trend of atmpospheric CO2 concentration has led many scientists to call for stablizing levels at or around 400 ppm, which will reduce the likelihood of serious climate change.

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In addition, in order to function at the highest levels, System Two requires training, discipline, concentration, skeptical and impartial evaluation of purported facts, and the ruthless elimination of contradictions.

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Thus, over the course of a few decades, the concentration of the gas in the atmosphere will return to pre-industrial levels.

ECONOMIST: Using the sea to grow biofuel

The reasonable funding levels for elite venture and growth managers, coupled with the concentration of premium deal flow to those managers, will generate the most attractive risk-adjusted returns.

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