8 votes

What are search engines with a focus on sustainability aspects?

The only one I'm aware of is Ecosia, which uses a substantial amount of the money generated through its search engine to fund tree planting (80% of surplus income according to Wikipedia). More ...
7 votes

What’s the carbon footprint of an email?

Here is an answer based on this 2010 Guardian article I found. Not sure how accurate it (still?) is. 4g CO2 for a 'normal' email. 50g CO2 for an email with a long attachment 0.3g CO2 for a spam email ...
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6 votes

What’s the carbon footprint of an email?

The guardian article mentioned by THelper to me is suspect. It cites McCaffey that claims that 62 trillion spam messages take 33 billion kWh of power. That's 2000 messages per kWh. Hmm. Let's ...
6 votes
Accepted

What is the environmental cost of encrypting your communications?

In fact there is an actual increase in energy consumption, though not much. What is done at the end devices is one thing (the encoding-decoding part). This answer from stackoverflow provides a good ...
  • 442
6 votes
Accepted

How much, if any, does resolution effect the net power consumption of watching online video?

The Natural Resources Defense Council commissioned a study in late 2015 to understand the energy consumption from 4K TVs, titled The Big Picture: Ultra High-Definition Televisions Could Add $1 Billion ...
  • 11.4k
5 votes

How much energy does it take to store 1 Terabyte of data in the cloud?

According to a 2016 blog post by Backblaze, a (particular) 1.5TB HDD uses 3.4W when idle and 5.9W when operating. This gives a lower bound of 20 kWh / TB / year and an upper bound of 35 kWh / TB / ...
5 votes
Accepted

What are search engines with a focus on sustainability aspects?

If you are asking about sustainability in general, I assume social aspects should be factored in. DuckDuckGo follows a number of principles linked to privacy and openness. They tend to use and ...
  • 3,222
4 votes
Accepted

Green social media to connect with nearby people to help reduce carbon footprint

As far as I know there isn't a "really famous green social media network / plug-in" where lots of green-minded people hang out and where you can just select the ones that live close to you. It's ...
  • 14.2k
4 votes

How much CO2 do I cause with one Google search?

As LShaver and Gerrit also mentioned in their comments, an exact answer would depend on the scope and method of calculation. You've already mentioned you are only interested in the search itself so I ...
  • 14.2k
3 votes
Accepted

What is the relative carbon footprint of getting ones media from Netfix or bittorrent

I'm not sure what P2P protocol was used and if results for BitTorrent would be the same, but in this study they calculated a decrease of 24-48% in the system-wide carbon footprint of online video ...
  • 14.2k
3 votes

What is the environmental cost of encrypting your communications?

AFAIK there hasn't been much research on this topic, at least not about energy consumption of encryption on a global scale. Most research I've seen is concerned with the impact of specific types of ...
  • 14.2k
2 votes
Accepted

The sustainability of Spotify

Summary: storing music locally most likely uses a bit less energy than streaming music, but it depends on things like if you replay the same song multiple times and if the music streaming service ...
  • 14.2k
2 votes

Green social media to connect with nearby people to help reduce carbon footprint

Here's what I've come across so far (not affiliated, just sharing): collective.energy is a fairly new but highly active community, I was lucky to notice its launch on Product Hunt recently; green ...
2 votes

Green social media to connect with nearby people to help reduce carbon footprint

Meetup.com has all sorts of groups with different interests, and I am sure you will find a nearby group that aligns with yours. It is designed to show you what is happening close to you. In a ...
  • 3,222
2 votes

Where to find the latest news on sustainability issues?

Science Daily is a good one. It discusses new scientific articles in a way that is understandable for non-scientists and it provides a link to the original article so you can read it yourself. The ...
2 votes

What is the environmental cost of encrypting your communications?

Not much at all. Since we waste more electricity waiting for a page to load with your monitor on. You would probably reduce your environmental cost by reading faster and not staring at the screen to ...
2 votes

What's the most carbon efficient format for videos on YouTube?

YouTube reformats all uploaded videos: YouTube stores whatever you upload and transcodes to other formats using their own versions of multiple compression formats including h.264 and webm Anyway, ...
  • 270
1 vote

How much energy does it take to store 1 Terabyte of data in the cloud?

The open-source project Cloud Carbon Footprint estimated the carbon footprint of storing 1TB in the Cloud. In their methodology they explain that they use the following numbers: HDD average capacity ...
  • 14.2k

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