The Week In Green Numbers

69%

- number of people who say they will continue to cut back on organic food after the recession

57%

- number of people willing to pay more for local food, in the same survey

20 years

- remaining life expectancy of the Great Barrier Reef

$4.5 billion

- what the Great Barrier Reef is worth to the Australian economy

10 million years

- length of time it took corals to return after the Permian extinction

42%

- amount that Arctic sea ice has thinned in the last 4 years

9%

- fall in the sales of bottled water in the UK in 2008

£7,191

- cost of the energy wasted by the Houses of Parliament every year

5%

- amount of water needed for a vertical farm compared to a conventional one