Butterfly populations have dropped by 22% across 554 recorded species in the United States, according to a new study in the ...

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

A new study, published in the Journal Science, shows the number of butterflies in the United States has drastically declined, 22% over 20 years. "The major factors that are considered likely here are ...

Scientists have long focused on rising temperatures to understand how climate change is reshaping the natural world. But ...

A landmark finding that suggests koala genetic diversity not the only deciding factor in successful regrowth of populations.

Add Yahoo as a preferred source to see more of our stories on Google. There could be billions more people on Earth than previously thought There could be billions more people living on Earth than ...

‘Extremely adaptable’ bird species are declining at an alarming rate – with worrying implications for humans. View on ...

For the first time, an international study has deciphered the genome of the population of Brazil. Published in the journal Science, the research includes the African, Native American, and European ...

AUSTIN (KXAN) — Texas was among several states to see historic highs of foreign-born, or immigrant, populations at the start of this year, according to a new study from the Center for Immigration ...