Microsoft and Starbucks have even linked up to make the coffee chain wireless and webby.

FORBES: Digital Spin

DMI, Henrik Svensmark, reasoned that if the solar cycle were linked to the earth's temperature, cosmic rays could be part of the chain.

ECONOMIST: Global warming: In flux | The

It can adversely affect forests and crops, and is also linked with damage to plankton, the microscopic creatures at the bottom of the marine food chain.

BBC: By Environment Correspondent Alex Kirby