It's only 2049. Scientists were off; climate deniers were wrong, and Mother Earth was pissed. Scientists miscalculated how extreme climate change was and in 2029, every volcano — from La Fortuna and Marsili to Yellowstone — erupted across the globe. Everyone suffered and Earth was now a desolate landscape stippled with precarious crab-pot cities brimming with survivors.
Over the next 20 years, those same scientists streamlined their doomsday experiments. The darkness killed off almost 80% of the population and flora and fauna, but it didn't kill the spirit of the Human Race - there were new ways of living.
Although only a known 1 billion people remained, as Humans do, they adapted. However, there was no way to naturally absorb the photic processes needed to live a healthy, happy life. Their bones crumbled, their teeth fell from their faces, and almost everyone was bald.
Initially, tanning beds fostered some benefits but were looted and sold for millions, leaving most without the D their bodies needed to flourish. However, with the expansion of nano-technology and lipophilic molecule vitamin-infused light, a glimpse of hope grew -- but there was an even darker cost.