NPR's Ailsa Chang speaks with Jake Johnston, a Haiti aid expert, about what USAID support has meant to that country and what a funding halt could mean.

NPR's Ailsa Chang talks with Emily Kwong and Regina Barber of Short Wave about the fluid dynamics of crowds, an early fossil of a modern bird and new data on how people's moods change through the day.

NPR's Ailsa Chang talks with Nancy Krieger, a social epidemiologist at Harvard University, about her efforts to preserve federal health data that recently disappeared from government websites.

And to kick us off right now, we have a preview of the awards with Stephen Thompson of NPR Music. Hey, Stephen. STEPHEN THOMPSON, BYLINE: Hey, Ailsa. It's great to be here. CHANG: Hey. OK ...

In a part of Altadena, where a single block and a half separates the home of Jennifer and Ed Barguiarena from complete destruction... ED BARGUIARENA: Yeah, just down this block, to the next..

When Donald Trump was sworn in on Monday, he was flanked by billionaires Elon Musk, Jeff Bezos and Mark Zuckerberg. An American government, closely aligned with money and power is something that ...

For sponsor-free episodes of Consider This, sign up for Consider This+ via Apple Podcasts or at plus.npr.org Email us at ... (CHEERING) AILSA CHANG, HOST: Donald Trump has not wasted any time ...

CHANG: Now, many of the details of Trump's agenda are still unclear, but that agenda is very likely to face logistical and legal challenges. NPR's Joel Rose has been following all of this and ...

Well, that was just one of many speeches from President Trump today, and here to break down what we heard and saw is NPR national political correspondent Mara Liasson. Hi, Mara. MARA LIASSON ...