Zombies Could Wipe Us Out In 100 Days, Research Says

A more optimistic scenario found better odds for humanity, even while increasing the zombie’s expected life span to a year. In the more positive mathematical model analyzed by the physics students in another paper, taking into account human reproduction and a 10 percent chance that each human could kill one zombie a day, the human population still fell to a few hundred. But the zombies all died off after 1,000 days, and humanity began to recover after 10,000 days (a little over 27 years).