“Looking back to a time when the universe was just over a billion years old, we see time appearing to flow five times slower" Lead author Professor Geraint Lewis from the School of Physics and Sydney Institute for Astronomy at the University of Sydney has unlocked the secrets of quasars, or the supermassive black holes at the centres of early galaxies, to use them as 'clocks' to measure time near the universe's beginning. Learn more: https://sydneyuni.co/43iEuKI #LeadershipForGood #USYD | Univer

Game theory can explain humanity’s biggest problem

3 game theory tactics, explained