Earth Hour: 'Like' can harm Earth

2012-03-29 21:35

Paris - Green groups around the world are turning to social networking to drive their campaign for Earth Hour on Saturday, when lights are turned off for an hour to signal concern about global warming.

But here's the irony:

With every e-mail, every tweet, every appeal watched on YouTube or "liked" on Facebook, environmentalists are stoking the very problem they want to resolve.

Each time we network, we emit carbon dioxide (CO2) through the fossil fuels which are burned to power our computers and the servers and databanks that store or relay our message.

That poses a small dilemma for the Australian-led campaign for Saturday's switch-off.

In 130 countries around the world, people are being urged to turn off the lights for one hour at 20.30 local time as a show of concern about climate change.

Carbon emissions

In e-mails alone, the typical office worker is responsible for 13.6 tons of CO2 or its equivalent per year, a French government agency for energy efficiency, Ademe, calculated in 2011.

That figure is based on a French company of 100 people who work 220 days a year and each receive 58 e-mails a day and send 33 per day, with an average mail size of 1MB.

By comparison, 13.6 tons is more than twice the annual CO2 emissions per capita in France and almost two-thirds of the average annual emissions per capita in the US.

The more people you cc and the bigger the mail, the greater the carbon emissions, Ademe said.

"Just a 10% reduction in the number of mails that are sent which include the boss and one of his colleagues leads to a gain of one ton, the equivalent of a round-trip flight from Paris to New York," it said.

Facebook and Twitter say they are striving to keep their carbon footprint as small as possible.

Facebook, which claims over 800 million users worldwide, is building a massive data centre - its third globally and first in Europe - in the Swedish town of Luleaa, near the Arctic Circle.


The local chill helps cool servers, rather than using air conditioning to do so, and the town gets clean energy from hydro.

Greenpeace had mustered a 700 000-signature demand for a "greener" Facebook under its so-called Unfriend Coal campaign.

At a talk last year that he posted on the internet, Raffi Krikorian, a director for infrastructure at Twitter, said the company contributed around 0.02g of CO2 to the atmosphere with each 140-character tweet.

"But at 50 million tweets, that's one metric ton of CO2 a day," he observed. "We can do better. We are making our stuff a lot more efficient, and that will get [our carbon emissions] a lot further down."

Just how climate-damaging is the internet?

By comparison with other sectors, not very - and it can be argued that the internet saves carbon which would otherwise be emitted in snail mail, phone calls or travel to face-to-face meetings.

A 2007 estimate by Gartner Inc, an international consulting firm, found the information and communications technology industry was sharply increasing its CO2 emissions in absolute terms but still accounted for only around 2% of the global total.


This is less than a sixth of emissions from either transport, industry or agriculture.

Andy Ridley, Earth Hour's executive director, said his organisation invested in offsets - projects that mitigate carbon emissions - to compensate for its own fossil-fuel pollution.

It was also using an intranet social platform called Yammer to cut down on internal e-mails.

"It has revolutionised how we communicate and very significantly cut the amount of electronic traffic," Ridley said.

"Overall, we think that our ability to build a campaign digitally, and to engage with people across the planet in a way that minimises travel, is one of the great advantages of technology."

  • gillian.sabino1 - 2012-03-29 22:15

    I support Baby Hour. Stop aborting Babies for 1 Hour!

      jody.beggs - 2012-03-30 04:32

      I support idiot hour, ignore idiots for one hour.

      Elaine - 2012-03-31 10:27

      Yes Gillian! I agree!

  • FeF - 2012-03-29 22:21

    I do my bit by not eating baked beans,cabbage,onions or broccoli this weekend.According to my wife and kids I contribute about 50% of the gasses that causes Global Warming!SORRY...

  • Paul - 2012-03-30 01:51

    Typically South African , NEGATIVE... Come on its not about Saving Electricity , its about the HUMAN element of everyone been ONE.. A Shared experience of caring about the environment.

      Elaine - 2012-03-31 10:28

      When Eskom switches off the lights in their head office at night and the johannesburg municipality switches off the street lights in the day, then maybe I'll think about it!

  • CoronaSherona - 2012-03-30 01:58

    *applauds* Gillian, you are awesome.

  • Mary - 2012-03-30 06:55

    O good, another thing to feel guilty about.

  • John - 2012-03-30 07:19

    By obvious reasoning; their computers would have been on any way. This is misleading information as it implies that your PC is solely responsible for the CO2 being released with regards to its power consumption. Any way. I like the idea of earth hour. Not because I believe in Global Warming persay (Obviously the earth is warming; Mind you at an extremely slow pace) rather due to the fact that for an hour we feel more united. To conclude. There's a lot of BS going on in science these days. Let's spend more time on finding the missing links shall we.

      Felix - 2012-03-30 08:14

      Spot on John! On a side note can I just count my contribution on Sunday when Eskom makes the choice for me? That's right all you big city dwellers us little towns are still suffering from load shedding.

      Skia - 2012-03-30 08:25

      i think you'll find the bs in the media and politics and not in the science

      Joe - 2012-03-30 08:50

      What is even more misleading is the the assumptions they use in calculating CO2 output for an office worker in france; "receive 58 e-mails a day and send 33 per day, with an average mail size of 1MB". WTF?!! an average mail size of 1MB?? I just did a quick run through of my inbox and of the last 48 messages I've received, only ONE was over 1mb!

  • Regie - 2012-03-30 12:11

    It's time to wake up! Really! METHANE is the biggest contributor to global warming. Methane from LIVESTOCK FARMING! Switching to a VEGAN diet is the SOLUTION!

      Warren - 2012-03-30 15:59

      Agreed, but lets be realistic, the majority of the population is not going to do this, and so the best we can work towards right now is a vast reduction in meat consumption. Earth Hour is a great idea, but the biggest CO2 contrabutor in South Africa (according to Wits, UCT and Eskom) is the near 1 million home coal stoves. The problem is its harder to blame the poor for enviromental damage as they have bigger fish to fry. The average South African eats about 40 kgs of meat- mostly chicken- per year. Most Europeans consume over 100kgs, on average.

  • Paul - 2012-03-30 23:47

    If you want Harper and his Conservatives to stay in power forever, then just keep condemning the voter’s children to the greenhouse gas ovens.

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