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A ‘100-year flood’ doesn’t mean you’ll be flood-free for the next 99 years. Win McNamee/Getty Images

What’s a 100-year flood? A hydrologist explains

Flood plain statistics can be confusing. There are better ways to think about the risk of severe weather than 100-year storm or flood.
The yellow-and-red striped flag of the defeated American-backed Republic of Vietnam flies at the U.S. Capitol insurrection Jan. 6. Tayfun Coskun/Anadolu Agency via Getty Images

Why the flag of South Vietnam flew at US Capitol siege

Onlookers who recognized the flag wondered why the mostly white mob had ‘coopted’ Vietnamese history. But Vietnamese Americans are Trump supporters, too, some driven by a potent fear of socialism.
Census Campaign executive director Victoria Kovari looks over a Detroit map showing city neighborhoods that were undercounted in the 2010 census. AP Photo/Corey Williams

Census undercounts are normal, but demographers worry this year could be worse

How accurate will the 2020 census be? A demographer explains which communities are hard to count, how the coronavirus could affect the process and what’s at stake.
42% of media coverage of the 2016 election focused on the horserace. Photobank Gallery/Shutterstock.com

Americans are drowning in a sea of polls

Polls have become an essential component of the news coverage of presidential campaigns. That may affect who voters decide to back on an election day.

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