The European economic crisis rumbles on, but with much still in a state of flux we've chosen to turn our front page attention this week to the environment. The Guardian's environment editor John Vidal looks at a new battle looming over climate change. Are conditions so bad that we should risk dramatic, large-scale attempts to cool the planet through geoengineering? It's an issue that I'm sure will arise again and again.
Not entirely unrelated is the theme that runs through the paper - immigration. We look at internal movement in Italy (there's a flood of southerners heading north, with considerable social as well as economic effects, as our sister paper Le Monde charted), while northern European states are seeking to push asylum seekers from Africa back towards the Mediterranean coast states - mostly Italy - where they landed. Meanwhile in Britain, the prime minister has announced an immigration crackdown. People are being urged to report anyone they think is an illegal immigrant, and families who want to sponsor family members to settle in Britain are being asked to put up hard cash to show they can support them.
Away from the news agenda, among the items that caught my eye this week were a Washington Post review of 30 Americans, an exhibition at the Corcoran Gallery in Washington; our "big" book review of Steven Pinker's The Better Angels of Our Nature, which claims that the human race is less violent than it used to be; and on the international development page, a powerful and disturbing account of the current state of Papua New Guinea and its resources boom.
And in our eight-page Learning English supplement, there's a fascinating exploration of cheating in exams - as test results become every more critical to our life chances, the temptations rise.
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