On many evenings during spring and fall migration, tens of millions of birds take flight at sunset and pass over our heads, unseen in the night sky.

Temperate grasslands are the most endangered but least protected ecosystems on Earth.

Arizona State University is leading the effort to help Hawaiians save the reefs by providing real-time monitoring in support of DAR's efforts.

Scientists report how increasing nutrients has caused harmful blooms in diverse waters.

Scientists aim to understand what happened during permafrost thawing periods in the past and predict how present-day global warming may affect permafrost and what this could lead to.

Climate change is increasing the number of days of extreme heat and decreasing the number of days of extreme cold in Europe, posing a risk for residents in the coming decades, according to a new study.

New research distinguishes between natural variability and influence of greenhouse gases.

Long-term measurements reveal links between climate change and ocean carbon dynamics.

A land-use program piloted in the United States is having a long-term positive impact on populations of white-tailed deer, according to new research by University of Alberta biologists.

Researchers drawing on 100-year-old sources of salmon data have found that recent returns of wild adult sockeye salmon to the Skeena River—Canada’s second largest salmon watershed— are 75 per cent lower than during historical times