Gregory Benford 
Worlds Vast and Various 

A time-traveller on an illegal trip into the past learns a chilling truth about her own destiny…As a deadly Superflu runs rampant through a polluted, overpopulated Earth, a husband-and-wife scientific team races to scientific team races to salvage a livable future…On a planet where the laws of physics are strangely twisted, a brilliant scientist’s work undermines an ancient faith and leads to a shattering revelation…An ore-hauler on Mercury, desperate to save her endangered ship and career, finds a remarkable way out: a wormhole trapped in the hellish flux of magnetic fields and fiery plasma generated by the nuclear furnace of the sun…