We are now 7 billion people living on this planet. But populations are not growing everywhere. Most of the affluent countries are expected to face severe demographic challenges due to ageing and shrinking workforces.
In Europe, the survival of social security - such as pensions, unemployment insurance, healthcare and education - will be one of this century's greatest tests.
Raising the general retirement age and increasing immigration rates are sound policies, but will not be su...
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Andrew Rettman is EUobserver's foreign editor, writing about foreign and security issues since 2005. He is Polish, but grew up in the UK, and lives in Brussels. He has also written for The Guardian, The Times of London, and Intelligence Online.