Counting millions of people is never an easy task, but according to the United Nations, India now has more people than China, an epochal shift in global demographics that happened sometime in late ...

x-axis represents the initial perfect defector ratio (η), and y-axis represents reputation cost (γ ). In accordance with the values of η and γ , there are two phases: one in which cooperation ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

Diagram top left: Course of active case numbers Diagram middle left: Susceptible proportion of population Diagram bottom left: Aggregate exogenous drivers incl. course of vaccination rates. Disclaimer ...