The number of species does not increase evenly when going from local ecosystems to continental scales—a phenomenon ecologists ...

Trump’s tariff evaluation strategy, backed by a mathematical formula, attempts to address trade imbalances but remains contentious. While proponents argue it helps safeguard American industries, ...

The empirical rule states that almost all observed data for a normal distribution will fall within ... and use the standard deviation function: You'll get more accurate results using more than ...