For more than half a century, the world has celebrated Earth Day on April 22. Earth Day is the largest global observation of an environmental movement designed to promote human action, volunteerism, and policy change. This year's theme is Restore Our Earth.

At Pacific Northwest National Laboratory, researchers are working to improve our understanding of the most pressing challenges facing the United States and the world. Hundreds of PNNL scientists are tasked with answering some of the most significant questions about Earth systems, including plants, the atmosphere, subsurface zones, terrestrial aquatics, and coastal areas. PNNL leads research in climate change and atmospheric systems and is developing a modeling framework to predict changes in climate.

Our research helps integrate renewable energy into the power grid to mitigate environmental factors. These renewable energy resources include hydropower, wind energy, solar photovoltaics, marine energy, and geothermal energy and aid the nation in achieving a sustainable energy future.

Below are some stories featuring research we've engaged in to better the Earth.