In the year of 3,627, the world population is now reduced to barely a hundred after the disaster in habitational area #3+ from last year. The sun is almost stopping and everything is ice. Humanity, or what's left of it, relies on termical nuclear energy so the fake forestal enviroments can work, but that energy is at its limit. Paula Krieger, human #622, is the first human to give birth to twin kids in 1,500 years, reason unknown. Development center #8 managed to bring chocolate ice cream back, and later this same year, development center #4 managed to recreate flavoured bubble gums. It was a sweet year for "the last hundred", as they were known.
The population that left Earth for the Moon Colony died mysteriously this same year, by the way.