The amount of data being downloaded through mobile devices has almost doubled over the 12 months to 30 June 2013.

Between January and June it rocketed up by 43%.

The Centre for Energy-Efficient Telecommunications in Melbourne has done some crystal ball gazing and found out that even though the internet uses just 1-2% of the world’s electricity right now the massive explosion of online use could see this figure rise to as much as 10% by 2025. And that is going to cause problems.

Watching streaming video uses 200-300MB/hour. An audio-only conference call on Skype takes 100MB/hour. Updating your device’s operating system can be 1GB (1000MB) or more.