05-31-2014, 09:04 AM
http://arstechnica.com/business/2014/05/...than-dvds/
All told, the study's estimates showed that streaming barely has a hold over DVDs bought and shipped in the mail and is actually beaten by DVDs rented by mail in terms of efficiency and CO2 emissions. When a customer goes to purchase DVDs from a store, however, the energy use per viewing hour is about 10 megajoules, a scant 2.5 megajoules per hour and 0.2 kilograms of CO2 per hour more than streaming. DVDs rented from a store were the worst offenders, using 4 megajoules and causing 0.3 kg more CO2 emissions per viewing hour, but good luck finding a store with DVDs these days to commit your emission and energy crimes in.
All told, the study's estimates showed that streaming barely has a hold over DVDs bought and shipped in the mail and is actually beaten by DVDs rented by mail in terms of efficiency and CO2 emissions. When a customer goes to purchase DVDs from a store, however, the energy use per viewing hour is about 10 megajoules, a scant 2.5 megajoules per hour and 0.2 kilograms of CO2 per hour more than streaming. DVDs rented from a store were the worst offenders, using 4 megajoules and causing 0.3 kg more CO2 emissions per viewing hour, but good luck finding a store with DVDs these days to commit your emission and energy crimes in.