There has been a staggering rise in early onset colorectal cancer. Research published in the journal "Nature" on Wednesday suggests a bacterial toxin could be a contributor.

President Trump has begun speaking differently about tariffs on China, saying the rate will come down substantially. And while it's not clear Trump is actually changing policy, he is changing tone.

The Trump administration is facing legal challenges to two of his top issues: immigration and tariffs. NPR's Michel Martin talks through the political implications with GOP strategist Alex Conant.