http://thothx.com/news-2/
Never heard of this outside of some speculative sci-fi. A friend, who is an engineer, swears this is real and has great potential.
I saw that in the news the other day. Concept has been around for a while, but the technical challenges are huge. No material exists that would be suitable for use as a cable 10km into the sky, but this company is proposing an alternative.
http://www.cbc.ca/news/technology/space-elevator-with-inflatable-tower-patented-by-thoth-technology-1.3194738 (http://www.cbc.ca/news/technology/space-elevator-with-inflatable-tower-patented-by-thoth-technology-1.3194738)
http://www.thestar.com/news/canada/2015/08/18/canadian-company-gets-patent-for-20-km-high-space-elevator.html (http://www.thestar.com/news/canada/2015/08/18/canadian-company-gets-patent-for-20-km-high-space-elevator.html)