People lived in many parts of the Old World by then but had not yet reached Australia or the Americas. The bulk of the human ...

The rates, scales, kinds, and combinations of changes occurring now are fundamentally different from those at any other time in history. . . . We live on a human-dominated planet and the momentum of ...

This increase is more rapid than at any other point in the history of our species. The human population is predicted to reach around 10 billion by 2050. As the population increases, the yield of ...

This increase can be clearly seen in a graph of human population. Scientists are unsure whether this population increase will continue for ever. Some think that the human population will continue ...