Anchor and the elevator

 The tech of a space elevator:

The low earth orbit rings follow the principles laid out by Paul Birch in his 3 papers. 

The discovery of a material strong enough to construct circular rings is the result of a fusion of mechanical engineering and witchcraft guided by Theo and Helena's insights. The two of them guide Jessica, a young ME student at UW-Madison, through a psychedelic experience that allows her to manipulate the Hold in a way that forms a new self-repairing crystalline carbon tube they dub the Lizardo Structure. The carbon nanotubes draw energy from the subatomic vibrations caused by our universe coming into contact with other universes, and this powers the self-repair.  

This discovery is followed by research into nanomachines capable of traveling within the tether that can detect degradation and provide the raw materials required for the structure's self-repair. 

The majority of the material required for the construction of the tether is obtained from the mining of asteroids - an emerging industry that got a jump start in the late 90s when Theo began redirecting his earnings from his post-college investing hobby. 

The lift is powered by a laser. During ascent, after reaching an altitude where the pull of gravity decreases, the lift accelerates to create a sense of gravitational pull for half the journey. The interior cabin then rotates, and the lift decelerates to create that same sensation.