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Unformatted text preview: 46 | P a g e 4 / 2 0 / 2 0 0 9 SP A M T R A M P L E S E N V I R O N M E N T W I T H H U G E C A R B O N F O O T P R I N T The 62 trillion spam emails sent in 2008 created carbon emissions equivalent to that of 2 billion gallons of petrol burnt in a car engine, according to a report (pdf) by computer security firm McAfee. The report looked at the energy expended to create, store, view and filter spam on personal computers and servers across 11 countries, including Australia, China, France, the US and the UK. I t found that the level of spam-related emissions generated in these countries is proportionate to its number of email users and the percentage of email that is spam, making it possible to estimate the total energy used by spam worldwide. Nearly 80 per cent of the energy used by spam comes from end-users deleting it from their inboxes and hunting for legitimate email. While spam filtering software takes up a further 16 per cent, it also reduces the overall energy impact of unsolicited email.also reduces the overall energy impact of unsolicited email....
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This note was uploaded on 09/17/2011 for the course BIO 1A taught by Professor Smith during the Fall '09 term at Casper College.
- Fall '09