Hansi Lo Wang

The first woman to win math's highest honor, the Fields Medal, has died of breast cancer at age 40. Maryam Mirzakhani specialized in theoretical mathematics.

Activists admit movement around national issues like police reform has been slow, but say they're focused on local issues — from paying subway fare to helping serve dinner to homeless people.

A leadership shuffle at the U.S. Census Bureau is underway as the agency faces funding issues and other challenges in preparing for the 2020 Census.

The census director said "there was no federal data need" to collect sexual orientation and gender identity data. But documents show the Housing Department and other agencies requested it.

For the first time since the shooting, the wife of James T. Hodgkinson spoke to reporters on Thursday. Hodgkinson opened fire on members of Congress at baseball practice in suburban Washington, D.C.

Before coming to Virginia, the Alexandria gunman lived in Belleville, Ill. Residents there were shocked by Wednesday's shootings, and say they're concerned about the nation's increasing political divides.

Devlin Barrett of The Washington Post talks about the widening Russia investigation, reported to include Trump. And we hear from neighbors of the gunman who shot at Republican members of Congress.

The FBI says James Hodgkinson of Belleville, Ill., shot and wounded five people, including Rep. Steve Scalise. We talked with his neighbors in Belleville.

The U.S. Supreme Court legalized marriages between people of different races 50 years ago. But some interracial couples today say they sometimes feel unaccepted in the U.S.

Today, one in six newlyweds marry someone outside their race, which appears to allude to a more accepting society.

Mexicans made up half of the 11.3 million unauthorized immigrants in the U.S. last year, according to new estimates by the Pew Research Center. There are growing numbers from Central America and Asia.

New immigrants are projected to be the main driver of the U.S. workforce over the next 20 years. That trend is already playing out in Maine, which has an aging white population with a low birth rate.

More young men are "falling to the bottom of the income ladder," while young women drive growth in the number of young people working full time in the U.S., according to a new Census Bureau report.

Younger Asian-Americans are more likely to cite unequal treatment by police than older generations, according to a survey of Asian-American voters who are also split on the issue along ethnic lines.

Less than one-fifth of voters in the fastest-growing racial group in the U.S. supported Donald Trump in the 2016 election, according to new results from the largest exit poll of Asian-American voters.

"Sexual orientation and gender identity" was listed in a Census Bureau report as a proposed topic for the 2020 Census or the American Community Survey. But the topic was later removed.

Results from the U.S. Census in 2020 could remake the political map. Some census experts say the stakes for the upcoming national headcount are higher than normal.

The U.S. Census Bureau is set to release proposed topics for questions in the 2020 census. Some demographers are worried that the census will become too politicized under the Trump administration.

A Hawaii judge has halted President Trump's second travel ban just hours before it was set to take effect.

Small grocery stores known as bodegas were once the cornerstones of New York City's Puerto Rican community. The industry has transitioned between ethnic groups, including now the Yemeni community.