Many of the findings highlight the strength of this demographic momentum. For example, the study found that if every unplanned pregnancy were avoided worldwide due to reproductive education, family planning, and cultural shifts, population would peak at 8.39 billion in 2050 and then fall to 7.3 billion by 2100, a level slightly higher than today. The study also found that implementing contentious population control measures such as a worldwide one-child policy, results in a population that wouldn’t fall back to present-day size until the end of the century. Another scenario looked at a hypothetical catastrophic mortality event equal to the number of deaths from the First World War, the Second World War, and the 1918 Spanish flu epidemic combined. This event barely altered the long-term population projection.