At his first press conference as head of the Department of Health and Human Services, RFK Jr. gave a glimpse of what the department will look like under his leadership: a smaller overall budget, relitigating settled scientific questions.   Guest: Kiera Butler, senior editor and reporter at Mother Jones and author of Raise: What 4-H Teaches Seven Million Kids and How Its Lessons Could Change Food and Farming Forever. Want more What Next? Join Slate Plus to unlock full, ad-free access to What Next and all your  other favorite Slate podcasts. You can subscribe directly from the What Next show page on Apple Podcasts and Spotify. Or, visit slate.com/whatnextplus to get access wherever you listen. Podcast production by Elena Schwartz, Paige Osburn, Anna Phillips, Madeline Ducharme, Ethan Oberman, Isabel Angell, and Rob Gunther. Learn more about your ad choices. Visit megaphone.fm/adchoices