WASHINGTON -- Climate change is among the national priorities that President Barack Obama has had difficulty addressing, even though he's months into his second term. Now, Obama says he wants to change that.
In an online video released by the White House, Obama says that in a speech Tuesday he will lay out his vision for reducing carbon pollution. The aim is to prepare the U.S. for the effects of climate change and lead other nations in the global effort.
Obama's speech Tuesday afternoon at Georgetown University will come the day before he leaves for a weeklong trip to three African nations.
In the video, Obama says, "There's no single step that can reverse the effects of climate change." But he adds that "when it comes to the world we leave our children, we owe it to them to do what we can."
He says scientists must design new fuels and energy sources, and workers must prepare for a clean energy economy.
Obama isn't saying what specifics he'll lay out. But White House aides have suggested the steps will include renewable energy and energy-efficient appliances and buildings. The plan is also expected to involve the Environmental Protection Agency using its authority under the Clean Air Act to regulate heat-trapping pollution from coal-fired power plants.