President Trump has announced plans to pull the U.S. out of the world's landmark climate agreement.
The world's first commercial direct carbon capture plant is set to begin operations near Zurich this week.
In addition to methane and carbon dioxide, scientists say permafrost could also release nitrous oxide.
As high tides caused flooding this week, federal legislation was introduced to protect neighborhoods.
The White House's proposed 2018 budget slashes funding for federal carbon capture and storage programs.
New research shows electric cars emit more greenhouse gases than hybrids in some states.
The White House's 2018 budget targets federal climate science, regulations.