Office suites will host startup companies, including one devising a system for cultivating algae as biofuel, another producing a type of pavement that lets rainwater seep into the ground instead of flooding sewers.

WSJ: Great Lakes region pins economic hopes on water

Tesco, Britain's largest supermarket chain, was able to take the lead in online groceries by devising a fairly simple system: goods ordered over the internet are picked from the shelves of the nearest supermarket and delivered to homes within set time slots.

ECONOMIST: Retailers are the top performers online

If Germany wants to save the euro it will have to accept greater risk- and burden-sharing, not least by mutualising some of the euro zone's debt and devising a Europe-wide system to stabilise banks.

ECONOMIST: Charlemagne

But digital immune systems should make it easier to keep up with this evolution by automatically devising new forms of defence, as happens in a real immune system.

ECONOMIST: A thousand ills require a thousand cures