Global warming or global cooling – I am never sure which to fear most when I wake in the morning – meltdown in the international banking system, recession, the possibility that Tony Blair might one day be el Caudillo of Europa, graves standing tenantless and the sheeted dead squeaking and gibbering in the London streets: enough, you may think, to be going on with.

Not so, think the Ruskis, who plan an experiment in tunnels near Geneva which might take us down the road to Time Travel and, in the course of it, open “a rift in the fabric of the universe”.

Call me a Luddite, but I cannot help thinking that a rift in the fabric of the universe might just be a rift too far and, certainly, unhelpful in the light of all the other rather pressing problems we have just now.

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