Gradient Descent

Physicist Minerva Draper and engineer Maxine Cantros love their work and hate their jobs. They hone the most destructive force in the Universe to create new technologies at a company rotten with corporate lackeys, where profit trumps people and the budget doesn't cover public safety. An experiment thrusts them into cataclysmic future. The Earth is in peril, and middle management pins the blame square on the women. To survive, they must outsmart murder-craving geniuses. Defend against weapons from the future. And destroy institutional misogyny. To save the future, they must grok how an impossible technology destroys the planet. And they'll do it all to save a dog that's already dead. Min and Max broke physics to save their dog; now humanity is doomed.