How many human beings can the Earth sustain? Many scientists think Earth has a maximum carrying capacity of 9 billion to 10 billion people.
How much longer can Earth support human life? The upshot: Earth has at least 1.5 billion years left to support life, the researchers report this month in Geophysical Research Letters. If humans last that long, Earth would be generally uncomfortable for them, but livable in some areas just below the polar regions, Wolf suggests.
Is our world overpopulated? Because there are too many of us to share the Earth fairly with other species and with future human generations, Earth is overpopulated.
What year will humans go extinct? Scientists estimate modern humans have been around about 200,000 years, so that should give us at least another 800,000 years. Other scientists believe we could be here another two million years…or even millions of years longer. On the other hand, some scientists believe we could be gone in the next 100 years.