Why so many tornadoes hit tornado alley

Each year, the United States has about 1,200 tornadoes. Many of them happen in tornado alley, a very broad swath of the U.S. that shifts seasonally. This area gets at least ten times more tornadoes than the rest of the world. Science writer Sushmita Pathak says that huge difference can be chalked up to one word: geography. But there’s a slice of South America with similar geographical features that gets comparatively fewer tornadoes, so what gives? Sushmita wades into the research weeds with guest host Berly McCoy, one of Short Wave’s producers. Read Sushmita’s full article on tornadoes that she wrote for the publication Eos . Have other science weather stories you think we should cover on the show? Let us know by emailing shortwave@npr.org ! Listen to every episode of Short Wave sponsor-free and support our work at NPR by signing up for Short Wave+ at plus.npr.org/shortwave . (Image credit: Connect Images/Jason Persoff Stormdoctor)

Tesla sales and production slumped heavily in Q1 2025

Tesla posted its production and sales numbers for the first quarter of 2025 this morning, and they continue the bad news streak for the electric automaker. Tesla produced 362,615 vehicles in total between January and the end of March, a 16.3 percent decrease from the same period in 2024. The drop in sales was a little less bad; unlike this time last year, Tesla was able to more closely match production with demand. As a result, the company delivered 336,681 EVs in Q1, a drop of 12.9 percent compared to Q1 2024. The Models 3 and Y make up the vast majority of Tesla’s business—it built 345,454 of them in Q1 2025, a 16.2 percent reduction compared to the same period last year. Despite a recent refresh for the Model Y, which comprised the majority of these two EVs, sales declined by 12.4 percent year-over-year, with just 323,800 being sold, compared to 386,810 for Q1 2024. Read full article Comments