It’s been about 2 years since the public became aware that San Francisco’s Millennium Tower, a 58-story luxury condo high rise, was significantly sinking and tilting.  Our last update on the tower was almost a year ago, when an engineering firm determined that the tower had continued to sink and tilt at a rate that was twice as fast as originally estimated.  Now, engineers believe they have determined a way to keep the building from continuing to move, but it’s going to be an extremely lengthy process and be extremely costly.