United States:
* Environmental Protection Agency (EPA): The EPA is the primary federal agency tasked with protecting human health and the environment. They employ a wide range of scientists, including physical scientists, to study air and water quality, pollution, climate change, and other environmental issues.
* National Oceanic and Atmospheric Administration (NOAA): NOAA focuses on understanding and predicting changes in the Earth's oceans and atmosphere. They employ physical scientists to study climate, weather, ocean currents, and marine ecosystems.
* National Aeronautics and Space Administration (NASA): NASA uses its expertise in space exploration to study Earth's environment from a global perspective. They employ physical scientists to study climate change, the atmosphere, and the Earth's surface.
* United States Geological Survey (USGS): USGS studies the Earth's natural resources, including water, minerals, and land. They employ physical scientists to understand geological processes, natural hazards, and the impacts of human activities on the environment.
* Department of Energy (DOE): DOE conducts research on energy technologies and environmental issues. They employ physical scientists to study climate change, renewable energy sources, and nuclear waste management.
International:
* United Nations Environment Programme (UNEP): UNEP is the leading global environmental authority, providing leadership and coordinating efforts to protect and manage the environment. They employ a wide range of scientists to study environmental issues and work on international agreements.
* Intergovernmental Panel on Climate Change (IPCC): The IPCC is an international body that provides the world with scientific information on climate change. They rely heavily on physical scientists to compile and assess research on climate change impacts, mitigation, and adaptation.
These are just a few examples. Many other national and regional government agencies around the world employ physical scientists to address environmental challenges.
The specific roles and responsibilities of these scientists vary, but they all contribute to understanding and protecting our planet.
