The late Dr. Helen Wambach pioneered "future-progression" studies with large groups of people beginning in 1980. What she found, as documented in the book Mass Dreams of the Future by Chet Snow, disturbed her. The majority of subjects who were hypnotically progressed to the early 21st Century, reported being in a "floating" state which she recognized as indicating they were between lives. Because many of the people should have still been alive in this time frame, Wambach concluded a large scale catastrophe(s) may have wiped out a significant portion of the population.
Things were looking up by 2300 A.D. and beyond, where a higher percentage of subjects reported being alive (i.e. in a future life). Snow characterized this era as "The Outward Wave," where people found themselves living in a synthetic space environment, a greatly changed Earth, or on another planet all together. One subject reported: "I was alone, looking at a very cold, tall and metallic-type city which you couldn't see into...I was tall and slim, all encased in a body suit except for face and hands...There was a huge empty space all around. Nothing green or growing, no trees, no other people; all was encapsulated in the city I guess."