Songbirds that pack on as much as 50 percent of their body weight before migrating and that sleep very little, exhibit altered immune system and tissue-repair function during the journey, which may hold implications for human health, according to Penn State researchers.

The caldera-forming eruption of Campi Flegrei (Italy) 40,000 years ago is the largest known eruption in Europe during the last 200,000 years, but little is known about other large eruptions at the volcano prior to a more recent caldera-forming event 15,000 years ago. 

Astronomers using NASA's Hubble Space Telescope say they have crossed an important threshold in revealing a discrepancy between the two key techniques for measuring the universe's expansion rate. 

Plumes of air pollution generated from a rapidly expanding city within the Amazon rainforest are wafting hundreds of miles and degrading air quality in the pristine rainforest, according to a team of scientists.

Abundant and healthy wildlife populations are a cultural and ecological treasure in the United States. 

Fossil fuels are the backbone of the global petrochemicals industry, which provides the world’s growing population with fuels, plastics, clothing, fertilizers and more. 

Extreme ocean winds and wave heights are increasing around the globe, with the largest rise occurring in the Southern Ocean, University of Melbourne research shows.

The longevity of Earth’s continents in the face of destructive tectonic activity is an essential geologic backdrop for the emergence of life on our planet. 

Researchers from MIT have discovered simple rules of assembly of ocean microbiomes that degrade complex polysaccharides in coastal environments.

Our scientists and managers depend on research surveys to monitor the status and trends of the coral reef ecosystems across the Hawaiian Archipelago over time.