Back in January of this year I purchased a Concept 2 Rowing machine. I bought it for 2 reasons. 1st so that I could workout no matter the weather outside and 2nd is that it has a much lower impact on my knees than walking or running.
This is nothing short of amazing. Take a few minutes to watch this short 5 minute video. There is so much here to digest and stand in awe of. I am a creationist and praise the Creator for how wonderfully He has made all of creation.
If you have not heard of Bitcoin, then I would suggest you are probably for the most part living off the grid. I say that with a little tongue and cheek, however for the most part you should have heard about it.