USA TODAY Health Reporter Ken Alltucker puts the FDA approval of Alzheimer's drug lecanemab in context.

The U.S. will send cluster munitions to Ukraine.

Nearly half of U.S. tap water is estimated to have dangerous chemicals.

Florida Gov. Ron DeSantis is stuck in neutral as he fights for the White House.

Meta launches Threads, a Twitter rival.

(Correction: A previous version of this episode mistakenly said that Threads automatically follows the people you already follow on Instagram. It instead gives you the option to do so.)

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