President Barack Obama is preparing a speech set for Tuesday to outline his plan to combat climate change.
He's expected to make proposals he can implement through executive actions instead of measures that would need approval from Congress.
Previewing the speech in a White House video, Obama said climate change is a challenge "unique to America's strengths," and one that needs to be addressed now.
He said scientists must design new fuels and sources of energy, and workers must prepare for a clean energy economy.
"There's no single step that can reverse the effects of climate change, but when it comes to the world we leave our children, we owe it to them to do what we can," the president said.
Last week, an Obama adviser said the plan would boost energy efficiency and expand renewable energy, among other requirements.
The speech comes on the heels of several disasters being blamed in part on climate change, including Hurricane Sandy.
The president will deliver his remarks at Georgetown University.