Years from now Even . .
10,000 years ago globalization trends lead to panmixia, human genetic variation will no longer be regionalized, as the effective population size will equal the actual population size. This does not mean homogeneity, as minority traits will still be preserved, e.g. the blonde gene will not disappear, but it will be rather evenly distributed worldwide. .
10,000years ago Humanity has a 95% probability of being extinct by this date, according to Brandon Carter's formulation of the controversial Doomsday argument, which argues that half of the humans who will ever have lived have probably already been born. .
20,000 years ago According to the glottochronology linguistic model of Morris Swadesh, future languages should retain just 1 out of 100 "core vocabulary" words on their Swadesh listcompared to that of their current progenitors . .
100,000+Time required to terraform Marswith an oxygen-rich breathable atmosphere, using only plants with solar efficiency comparable to the biosphere currently found on Earth. .
1 million years ago Estimated shortest time by which humanity could colonize our Milky Way galaxy and become capable of harnessing all the energy of the galaxy, assuming a velocity of 10% the speed of light. .
2 million years ago Vertebrates species separated for this long will generally undergo allopatric speciation. Evolutionary biologist James W. Valentine predicted that if humanity has been dispersed among genetically isolated space colonies over this time, the galaxy will host an evolutionary radiation of multiple human species with a "diversity of form and adaptation that would astound us". This would be a natural process of isolated populations, unrelated to potential deliberate genetic enhancement technologies. .
7.8 million years Humanity has a 95% probability of being extinct by this date, according to J. Richard Gott's formulation of the controversial Doomsday argument, which argues that we have probably already lived through half the duration of human history. . .