and human population growth (e.g., how fast will the ... have observed that the size of many populations fluctuates over time rather than remaining constant as logistic growth predicts.

These data for the US human population suggest something general ... the estimate of the intrinsic rate of natural increase; over a short period of time, tends to decrease. This means that there ...

nearly every country will have a fertility rate lower than what would be necessary to sustain the human population over time. Some longer-range forecasts, out to 2200 or 2300, paint a portrait of ...

The human population has experienced a period of unprecedented growth, more than tripling in size since 1950. It reached almost 7.8 billion in 2020 and is projected to grow to over 8.5 billion in ...

Humans’ impact has been so profound that scientists have proposed that the Holocene era be declared over and the ... from those at any other time in history. . . . We live on a human-dominated planet ...

Now it turns out that some birdsongs also contain a hidden world of shared language, with varying local accents and dialects ...

The spread of population across the ... sapiens rather than other archaic human species. Experts conducted luminescence dating, which analyzed the last time the fragments were exposed to sunlight ...

As human populations have grown over the centuries ... leading to a steadily declining population over time. More information: Jared D. Wolfe et al, Climate change aggravates bird mortality ...

Human brains contain higher concentrations of microplastics than other organs, according to a new study, and the amount appears to be increasing over time. In the study, published in early ...

New research has provided fresh insights into how bird songs evolve over time, revealing a significant role for population dynamics in shaping song diversity and change. The findings are based on an ...