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Climate change, driven by increases in human-produced greenhouse gases and particles (collectively referred to as GHGs), is the most serious enviro...

The Arctic has been undergoing significant changes in recent years. Average temperatures are rising twice as fast as they are elsewhere in the worl...

The U.S. Global Change Research Program (USGCRP) was established in 1990 to assist the Nation and the world to understand, assess, predict, and res...

In 1999 the National Academies of Sciences, Engineering, and Medicine released a landmark report, Our Common Journey: A Transition toward Sustainab...

Climate is changing, forced out of the range of the past million years by levels of carbon dioxide and other greenhouse gases not seen in the Earth...

Many factors contribute to variability in Earth's climate on a range of timescales, from seasons to decades. Natural climate variability arises fro...

Solar irradiance is a vital source of energy input for the Earth's climate system and its variability has the potential to mitigate or exacerbate a...

The United States' tradition of conserving fish, wildlife, habitats, and cultural resources dates to the mid-19th century. States have long sought ...

The US Global Change Research Program (USGCRP) is a collection of 13 Federal entities charged by law to assist the United States and the world to u...

The U.S. Global Change Research Program (USGCRP) is an interagency program, established by the Global Change Research Act (GCRA) of 1990, mandated ...

The United States Global Change Research Program (USGCRP) is moving towards a sustained assessment process that allows for more fluid and consisten...

The ocean is an integral component of the Earth's climate system. It covers about 70% of the Earth's surface and acts as its primary reservoir of h...

The U.S. National Climate Assessment identified a number of ways in which climate change is affecting, and is likely to affect, people, infrastruct...

The world's nations are moving toward agreements that will bind us together in an effort to limit future greenhouse gas emissions. With such agreem...

For more than 75 years, high-hazard structures in the U.S., including dams and nuclear power plants, have been engineered to withstand floods resul...

The stresses associated with climate change are expected to be felt keenly as human population grows to a projected 9 billion by the middle of this...

Our world is changing at an accelerating rate. The global human population has grown from 6.1 billion to 7.1 billion in the last 15 years and is pr...

Climate change is occurring. It is very likely caused by the emission of greenhouse gases from human activities, and poses significant risks for a ...

The Earth system - the atmospheric, hydrologic, geologic, and biologic cycles that circulate energy, water, nutrients, and other trace substances -...

Improved observations of the atmospheric boundary layer (BL) and its interactions with the ocean, land, and ice surfaces have great potential to ad...

Wildland fires pose a growing threat to air quality and human health. Fire is a natural part of many landscapes, but the extent of area burned and ...

More intense heat waves, extended wildfire seasons and other escalating impacts of climate change have made it more important than ever to fill kno...

Climate change is creating impacts that are widespread and severe for individuals, communities, economies, and ecosystems around the world. While ...

The drylands region shared by the United States and Mexico currently faces multiple sustainability challenges at the intersection of the human and ...

Understanding, quantifying, and tracking atmospheric methane and emissions is essential for addressing concerns and informing decisions that affect...

Sediments, ice, corals, and trees are just some of the natural storehouses of information that help tell the complicated history of Earth's climate...

To achieve goals for climate and economic growth, negative emissions technologies (NETs) that remove and sequester carbon dioxide from the air will...

The US Global Change Research Program (USGCRP) is a collection of 13 Federal entities charged by law to assist the United States and the world to u...

For nearly a century, scientific advances have fueled progress in U.S. agriculture to enable American producers to deliver safe and abundant food d...

The National Aeronautics and Space Administration (NASA) and other U.S. science research agencies operate a fleet of research aircraft and other ai...

Climate change is fundamentally changing ecosystems and their fire conditions, and the 2023 fire season highlighted the urgency of developing and i...

The growing problem of changing environmental conditions caused by climate destabilization is well recognized as one of the defining issues of our ...

Global climate change is one of America's most significant long-term policy challenges. Human activityespecially the use of fossil fuels, industria...

Addressing climate change is essential and possible, and it offers a host of benefits - from better public health to new economic opportunities. Th...

As the nation's economic activities, security concerns, and stewardship of natural resources become increasingly complex and globally interrelated,...

Across the United States, impacts of climate change are already evident. Heat waves have become more frequent and intense, cold extremes have becom...