Around the world, cultural heritage sites are being affected by climate change. In partnership with @CyArk, @ICOMOS, @AKUGlobal, @googlearts is working to digitally preserve them. Explore five of these UNESCO World Heritage Sites → http://g.co/heritageontheedge … #HeritageontheEdgepic.twitter.com/G6anJQFS1W
Have happened before, and history shows prof for this from older buildings far back in time. If you look back several thousand years this effect came from vulcanic activity and huge forest fires bigger than the last in Australia. Acid rain.