1. The problem statement, all variables and given/known data Name several ways in which our life would be different if the speed of light is 20 m/s rather than its actual value. 2. Relevant equations Does it also affect our biological clock? 3. The attempt at a solution I believe that if your would travel any vehicle at opposite direction of the sun, your speed is much faster than of the photons so i believe you would experience absolute darkness. Any ideas?