Taylor Swift has endorsed Kamala Harris for president — will it matter? Swift wrote on Instagram, "I need to be very transparent about my actual plans for this election as a voter." How much sway do stars really have when it comes to putting the next president in the White House? Chloe Veltman
Mammograms will better explain what it means to have dense breasts Nearly half of women over 40 have dense breasts, which raises their risk of breast cancer. Mammograms should now include an assessment of breast tissue density. Yuki Noguchi
'The Bibi Files.' Benjamin Netanyahu fails to block documentary from screening An Israeli court this week rejected a request from Prime Minister Benjamin Netanyahu to block a documentary about his legal troubles from screening at a Canadian film festival. Itay Stern
Is getting food delivered worse for the climate? Sometimes it’s better From meal kits to grocery service to restaurant delivery, we look at the carbon footprint of convenient food and the choices people can make to try to reduce it. Sometimes there are trade-offs. Scott Neuman
The debate between Harris and Trump wasn’t close — and 4 other takeaways Tuesday’s debate between the current vice president and former president was a clear contrast from the June debate that forced President Biden from the race. Domenico Montanaro
How Memphis became a battleground over Elon Musk’s xAI supercomputer A massive project headed by Elon Musk in Memphis, Tenn., to power AI has moved at breakneck speed. But it's stirring controversy around pollution emissions. The EPA says it’s looking into it. Dara Kerr
5 good habits to keep you out of credit card debt Stay on top of your monthly payments and avoid costly fees and interest charges with these smart credit card strategies. Marielle Segarra
Fearing the worst, schools deploy armed police to thwart gun violence Armed officers on campus could speed police response to gun violence. But there is scant research to support this strategy, and studies about racial bias raise other concerns about police in schools. Christine Spolar
The stereotype of immigrants eating dogs and cats is storied — and vitriolic as ever Immigration was always going to be part of Tuesday night’s presidential debate. More surprising was that the conversation veered into bizarre falsehoods about migrants eating pet dogs and cats. Jasmine Garsd
