You may have seen The NYT’s coronavirus case map. It's part of a sprawling data effort that involved over 100 journalists. We learned today our work was part of an entry that received the Pulitzer Prize for Public Service. Here’s how the project came to be. Back in January 2020, before we really understood the immense suffering and disruption that the coronavirus would bring, @monicadavey1 had an idea: What if we started a spreadsheet to track the handful of cases that had been identified in the United States?

The public health department in Arkansas, a state with 3 million residents, says it can’t release the counties where coronavirus patients are dying because of “privacy concerns." We're still doing our best to track every case. nytimes.com/interactive/20… Most states have worked to provide county-level information on coronavirus cases and deaths. It’s important: It can help residents understand the scope of infection in their community. It can help researchers predict what comes next. It can help policymakers make decisions.

As floodwaters recede in much of the Midwest, portions of the Pine Ridge Indian Reservation in South Dakota remain cut off by swamped roads. Supplies are being delivered by horse and helicopter. Tribal officials are exhausted and overwhelmed. nytimes.com/2019/03/24/us/… These men on the Pine Ridge Reservation were preparing to take backpacks full of donated food to a woman stranded by flooding. In some places, it was easier to get around by horse than vehicle.

It’s hard to sum up the damage from the floods in Nebraska and Iowa. But after driving 944 miles across the two states this week, I’ll give it a try. To start, here’s a look at how agriculture, which drives the Plains economy, was devastated: nytimes.com/2019/03/18/us/… The farm I visited in Verdigre, Neb., close to South Dakota, was a near-total loss: Cows dead, tractors overturned, alfalfa fields stripped bare by glacial-looking ice chunks the size of cars. After five generations, the owners doubted whether they could stay in business.

Good morning from Madison, where Wisconsin lawmakers are set to consider several hastily introduced bills that would curb the power of the incoming governor and attorney general, who are both Democrats. Wisconsin Republicans scrambled lawmakers to the Capitol to consider bills that would curb the authority of the newly elected Democratic governor and attorney general. Here’s our first look at the controversy brewing in Madison: nytimes.com/2018/12/03/us/… With @monicadavey1.

Preparations are underway for the March for Our Lives event on this chilly Chicago morning. A rally will start in about two hours, followed by a march through the city’s Near West Side. Thousands are arriving in Chicago’s Union Park for today’s march. One marcher’s sign: “2nd Amend It!”