In his weekly address to the nation, Obama discussed new actions by the Environmental Protection Agency (EPA) to cut hazardous carbon pollution, a plan that builds on the efforts already taken by many states, cities and companies.
Obama discussed this new plan from the Children's National Medical Center in Washington DC where he visited children whose asthma is aggravated by air pollution.
As a parent, Obama said he is dedicated to make sure the planet is cleaner and safer for future generations.
"We limit the amount of toxic chemicals like mercury, sulphur, and arsenic that power plants put in our air and water. But they can dump unlimited amounts of carbon pollution into the air.
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"It's not smart, it's not safe, and it doesn't make sense," said the US President.
That's why, a year ago, he said, he directed the EPA to build on the efforts of many states, cities, and companies, and come up with commonsense guidelines for reducing dangerous carbon pollution from power plants.
"In just the first year that these standards go into effect, up to 100,000 asthma attacks and 2,100 heart attacks will be avoided - and those numbers will go up from there," Obama said.
"These standards were created in an open and transparent way, with input from the business community. States and local governments weighed in, too.
"In fact, nearly a dozen states are already implementing their own market-based programmes to reduce carbon pollution. And over 1,000 mayors have signed agreements to cut their cities' carbon pollution," he said.
"The shift to a cleaner energy economy won't happen overnight, and it will require tough choices along the way," he argued.
"But a low-carbon, clean energy economy can be an engine of growth for decades to come. America will build that engine. America will build the future.
"A future that's cleaner, more prosperous, and full of good jobs - a future where we can look our kids in the eye and tell them we did our part to leave them a safer, more stable world," Obama said.