A new study finds North American bird populations keep dropping, and that decline is speeding up for many species.

Scientists studying data collected over more than three decades found accelerating losses. Their research offers clues about the causes.

Humans were moving between Siberia and northern China far earlier than thought, according to a new study that offers a ...

For the first time, researchers have mapped the population structure of silky sharks (Carcharhinus falciformis) in the Eastern Pacific Ocean, offering new insights that could guide future conservation ...

A study published in the journal Nature Communications reveals that the global population, particularly in rural areas, may have been vastly underestimated for decades. According to The Independent, ...

A new study is challenging one of the most widely accepted statistics in the world. The current global population figure of 8.2 billion may be a serious undercount, according to researchers who say ...

Add Yahoo as a preferred source to see more of our stories on Google. A sweeping study of 774 zoo populations finds animals are getting older while breeding drops, prompting researchers to call for ...

Researchers at Rice University have uncovered a critical link between rising temperatures and declines in a species’ population, shedding new light on how global warming threatens natural ecosystems.