Incidents such as the 2004 tsunami in the Indian Ocean and Hurricane Katrina, which devastated New Orleans in 2005, have provided deadly evidence of the power of nature to wreak destruction and throw human communities into chaos.

CNN: Climate change 'to create 1B refugees'

That's centred on colleges: Mr Hood's critics fear that weakening their power would turn them into dormitories, undermining the personal nature of an Oxford education.

ECONOMIST: Britain's oldest university wrestles with modernisation

Last week I got sucked into a Twitter debate about the meaning and nature of power.

FORBES: What Does 'Power' Mean In The 21st Century?