Jennifer Ludden

Updated at 4:30 p.m. ET

Tens of thousands of demonstrators took to the streets Saturday in Washington, D.C., and cities across the globe, for the People's Climate March, demanding action on protecting the environment.

On a sweltering hot day in the nation's capital, protesters made their way down Pennsylvania Avenue chanting, singing and banging drums. Once they reached the White House, some staged a sit-in while others marched past carrying signs and shouting, "Shame, shame, shame."

Kevin Butt's job is to find cleaner ways to power Toyota. One of the hardest places to do that is at the automaker's sprawling plant in central Kentucky, a state where nearly 90 percent of electricity still comes from coal.

Butt points out a new engine assembly line, where a conveyor belt moves in a slow circle. He says it was specially designed with a more efficient motor. There are also enormous fans overhead and LED lights, all changes that save millions.

There have been no executive orders yet to undo President Barack Obama's signature climate plan, but many officials and environmental groups consider it as good as dead. The Clean Power Plan is on hold while a legal battle plays out, and even if an appeals court upholds it — a decision could come any day — the Trump administration is likely to appeal to the Supreme Court.

The state of New York decided to forge ahead anyway. Like a number of other mostly liberal states, it is continuing with efforts to drive down the carbon emissions that drive climate change.

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The most contentious presidential campaign and election in memory has many people dreading the upcoming Thanksgiving holiday. Some have even canceled plans, unwilling to face family members on the other side of the country's hardening political divide.

In Greensboro, N.C., Eyeisha Holt spends her days as a full-time child care worker at Head Start. But after a decade's work in early education she still earns only $11.50 an hour — barely enough, she says, to cover the basics as a single mom of two. So every weekday evening she heads to her second job, as a babysitter.

"Are you ready to go to bed?" she asks, as she oversees bath time for her 3-year-old daughter and another of her charges. For 25 hours a week, Holt cares for toddler twins, in addition to her daughter and teenage son.

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American parents often have difficulty securing care for their children while they go to work. Child care in the U.S. is tremendously expensive, and in many parts of the country, extremely scarce.

Rewind almost 50 years, and the same problems existed.

But in 1971, the United States came very close to having universal, federally subsidized child care. NPR examines how Congress came to pass the legislation, and why President Nixon vetoed it.

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