If the wind intensifies very quickly, the amount of power generated by the wind turbines increases rapidly, injecting excess power into the generation system.

FORBES: Duke Energy Bets Big on Better Batteries

If the millions of internet-connected Macs are left open to attack then this increases the chance that an effective Trojan or piece of spyware will reach critical mass and spread rapidly, and it also increases the incentive for a bright programmer to write Mac-specific malware that could affect me.

BBC: Steve Jobs waits on stage, AP

Mr Webb dismissed Labour's claims, arguing that the government had "good news for today's pensioners - both the highest ever cash increase but more than that year-on-year, above inflation increases whenever earnings grow more rapidly".

BBC: Minister denies 'hoodwinking' pensioners

There are also some ecosystems, such as the boreal forests of Canada and Siberia and the Amazon rainforest, which are huge absorbers of carbon dioxide, but which are changing rapidly because of temperature increases and deforestation.

ECONOMIST: Two new satellites will monitor carbon-dioxide emissions

First, the human population has expanded rapidly during that period, which increases the size of the gene pool in which mutations can occur.

ECONOMIST: Human evolution

As demand for energy increases worldwide, our Nation must continue to lead the world in a rapidly evolving energy market by pursuing safe and responsible domestic energy production, promoting efficiency, and developing clean energy and renewable fuels.

WHITEHOUSE: The White House

With many health-care analysts predicting 6-7% increases in health insurance fees this year, benefit costs could rise even more rapidly.

ECONOMIST: Too triumphalist by half