Alyson Hurt

It's the most diverse field ever, and the largest in at least 40 years. Potentially two dozen Democrats are entering a long, drawn-out primary process to take on President Trump in 2020.

Its environment and population are enduring major shifts as the country goes big on mining and as effects of climate change set in. See Mongolia's changes close up in this immersive photo essay.

So far in 2019, nine states have passed laws to outlaw abortion or forbid it past a certain point in pregnancy. None of these laws are in effect, and many are being litigated in the courts.

Attorney General William Barr explained before the release of the special counsel report that the law and regulations kept him from including everything that Robert Mueller uncovered, as well as how.

See which 2020 presidential candidate has raised the most money, who has spent the most, where a candidate's funding comes from — and how the Democrats stack up against President Trump.

The Republicans' last-ditch attempt to repeal the Affordable Care Act now and replace it later would have caused insurance rates to soar, and millions could have lost coverage within a year.

Tax breaks for the wealthy would be trimmed, and people would get the option to buy bare-bones plans. But big cuts in Medicaid and changes to coverage for pre-existing conditions remain.

The Congressional Budget Office estimates that 22 million people would lose coverage with the Senate bill. That includes 15 million people on Medicaid, and others who could no longer afford insurance.

Senate Republicans are calling their health care bill the Better Care Reconciliation Act. It shares many provisions with the House bill, but goes further in cutting Medicaid.

The version of the American Health Care Act passed by the House eliminates taxes on corporations and wealthy people and shrinks Medicaid coverage. A chart breaks down who would be affected and how.

The overall increase in the number of Americans with health insurance draws attention to counties where the uninsured rate is still high, many of them in states that chose not to expand Medicaid.

Trump picked up big margins in small and rural counties. But those areas would take the biggest hit with tax credit changes, according to an NPR analysis of data from the Kaiser Family Foundation.

Border crossers, farm laborers, new arrivals from Mexico: There's no shortage of stereotypes about people living in the U.S. illegally. But the statistics tell a different story.

The Oroville dam is the tallest in the country and has a capacity of 3,537,577 acre feet. It went over capacity last week causing massive evacuations and bringing attention to its damaged spillways.

Is an Olympic athlete from your state? Use our search tool to find out. Nearly half of the U.S. team has ties to just five states — and 47 athletes were born in other countries.

They vary widely, particularly by sport. We broke out some numbers that help describe the 554 U.S. athletes in Rio.

Thanks to police and FBI records and witness accounts, it's becoming clearer — if still impossible to comprehend — what transpired in Orlando in the early hours of June 12.

The government has proposed new standards to lower emissions from coal-fueled power plants. But overall, the country is relying less on coal for power. In 40 states, use of coal as a power source (as a share of all power sources) has dropped since 2004. Many of these states are ...

This post was updated at 11:35 a.m. ET

Congress is back with a daunting must-do list. But its first order of business will be the Iran nuclear deal, as a deadline looms on Sept. 17. Even though the deal is basically done, as NPR's Ailsa Chang reports, Congress ...

Sure, playing in the women's World Cup burns a lot more energy than watching the women's World Cup. But the number of calories expended in sports and daily activities isn't always so obvious.

To figure it out, we dove into this database compiled by Arizona State University. It charts ...