Forests are the world's air-conditioning system-the lungs of the planet-and we are on the verge of switching it off.

Something as curious as the monarchy won't survive unless you take account of people's attitudes. After all, if people don't want it, they won't have it.

Business is recognizing the role it can play in combatting climate change. Thank God, is all I can say, for there is a desperately urgent need for business to play that role. Your lobbying influence can be substantial, but together, united and in large enough numbers it could prove decisive in turning the tide.

. . . a jostling scrum of office buildings so mediocre that the only way you ever remember them is by the frustration they induce - like a basketball team standing shoulder to shoulder between you and the Mona Lisa.

The sustainability revolution will, hopefully, be the third major social and economic turning point in human history, following the Neolithic Revolution - moving from hunter-gathering to farming - and the Industrial Revolution

Organic farming has been shown to provide major benefits for wildlife and the wider environment. The best that can be said about genetically engineered crops is that they will now be monitored to see how much damage they cause.

There is very good evidence indeed that one of the major reasons for this horror in Syria was a drought that lasted for about five or six years, which meant that huge numbers of people in the end had to leave the land.