China today is 4 times more populous than the United States. At the turn of the century, it could conceivably have roughly the same number of people as America.
With great power comes great responsibility,” goes the iconic declaration by Spider-Man. Worryingly, great power is being bequeathed to an increasingly irresponsible humanity. There have been leapfrog ...
Eventually, enough oxygen accumulated to power the evolution of aerobic life — a stark example of the transformative impact of some lineages constructing environments in which others can thrive.