Secondly, educating young people is not enough: the poor demographic outlook means that people of all ages must learn new skills, and keep working for longer.

ECONOMIST: The brainpower famine begins to bite

Each year 36 teenagers learn cutting-edge business skills and earn money working on projects for real clients including Hewlett-Packard and Sun Microsystems.

BBC: Plugging in to the revolution

The nonprofit shop, which works closely with the U.S. Small Business Administration, has more than 10, 000 working and retired business professionals who volunteer to help entrepreneurs learn everything from writing a business plan to marketing skills.

FORBES: Retirement With A Purpose