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This is the science podcast for March 5th, 26. I'm Kevin McLean. First up, a peek into the

roiling seas of U.S. science policy. Sarah Crespi spoke with several newswriters to discuss

changing rules, regulations, and leadership

in U.S. science agencies, as well as an accusation of a small nuclear arms test in China

that may spur weapons testing in the U.S. and Russia.

Next on the show, a clever wartime spider farmer and a look at space law are among the topics

of this year's children's book roundup. Senior science editor

at Valerie Thompson joins host Sarah Crespi to discuss the books and reviews of them,

written by science staffers and sometimes their kids. Last month in February, there was just a flurry of science policy stories, particularly at the end.

I grabbed our science insider editor, Jocelyn Kaiser, and our few reporters

that work policy-adjacent beats to catch us up. We talked at the end of last week, and of course

things may have happened, like my voice falling apart, since this went into editing. We start

with Jocelyn Kaiser, with shifts at major science agencies, then head into radiation regulations

and nuclear weapons testing

with Warren Cornwall and Ridge Stone, will finish up with hiring restrictions for foreign

workers at NIST with reporter Bob Service. First, here's Jocelyn. There's a couple things that

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