SMU & Google find abundance of geothermal energy in US

'Fraking' has caused earth quakes in the uk, where they are trying to extract the gas down there. https://en.wikipedia.org/wiki/Hydraulic_fracturing

But that is a slightly different thing to geothermal drilling. You're basically drilling 4km down, and putting a big pipe in. Then you run water through it, which heats the water.

There have been no earth quakes caused in Australian drilling for geo thermal plants to my knowledge.

However, it depends on the technology used. Some of these people are just dumping massive amounts of toxic chemicals and blasting the crap out of the rocks. Obviously this affects the water down there - and is super evil. If you're careful, and with planning I don't see why it wouldn't be possible to do safely and in a non toxic way.

For reference: drilling for oil or natural gas also causes earthquakes. For example, many (even most, I think. http://www.knmi.nl/seismologie/aardbevingen-nederland.html has a map of the last 30; most are up north beneath the Slochteren field) earthquakes in the Netherlands are caused by the sinking of the earth's surface due to removal of natural gas.

It also is important to notice that earthquakes need not be disastrous. The largest of those 30 was a magnitude 4.5 a couple of months ago. It made the news.

I know you're just teasing, but: when I say "Our family built a new house" I don't mean that we laid the bricks, I mean we paid to have it built. And I think it's entirely appropriate the the company who expended the resources to make the research happen gets full credit (to the extent that no one mistakes this for evidence of the research capabilities of Google's employees).

Probably, but I imagine there might be a massive build-up of salt, leaving the "mine" unusable after a while.