Climate Impacts

Humans and our environment are already feeling the impacts of climate change as it makes temperatures hotter, sea levels higher, storms more intense, and oceans more acidic.

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IPCC Releases Full Report on Extreme Weather Risk Management
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Degrees of Risk: Defining a Risk Management Framework for Climate Security

There is a growing consensus in the security community that climate change presents significant risks to the delivery of national, regional and global security goals. Through sea level rise, shortages of food and water and severe weather events, climate change …

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Workshop Proceedings: Assessing the Benefits of Avoided Climate Change: Cost-Benefit Analysis and Beyond

Based on decades of research by the scientific community, there is now wide recognition that emissions of greenhouse gases are changing our climate and that the future impacts from such changes will largely be harmful. In response, policymakers across the …

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Regional Impacts of Climate Change: Four Case Studies in the United States

In 2007, the science of climate change achieved an unfortunate milestone: the Intergovernmental Panel on Climate Change reached a consensus position that human-induced global warming is already causing physical and biological impacts worldwide. The most recent scientific work demonstrates that …

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Observed Impacts of Climate Change in the United States

For over a century, scientists have documented the important role that that the climate plays in the geographic distribution of the world’s ecosystems and the wildlife they support.  Yet, it is now quite evident that the climate these species depend …

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A Synthesis of Potential Climate Change Impacts on the U.S.

Greenhouse gas emissions—primarily from human activities such as the burning of fossil fuels— are causing changes in the global climate. Global temperatures increased approximately 1°F over the 20th century, and additional warming of 2.5-10.5°F is projected over the next century. …

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Coral Reefs & Global Climate Change: Potential Contributions of Climate Change to Stresses on Coral Reef Ecosystems

Coral reefs represent some of the most biologically diverse ecosystems on Earth, providing critical habitat to approximately 25 percent of marine species. In addition, these ecosystems provide economic benefits through tourism and fisheries. One recent estimate valued the annual net …

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Coastal and Marine Ecosystems & Global Climate Change: Potential Effects on U.S. Resources

Eileen Claussen, President, Pew Center on Global Climate Change The world’s oceans cover approximately 70 percent of the Earth’s surface, indicating their importance to the global environment. In addition to having a large influence on global heat transport and precipitation, …

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Aquatic Ecosystems and Global Climate Change

Aquatic ecosystems are critical components of the global environment. In addition to being essential contributors to biodiversity and ecological productivity, they also provide a variety of services for human populations, including water for drinking and irrigation, recreational opportunities, and habitat …

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