We recap the year in science news with Sarah Kaplan and Rachel Feltman.
The Department of Health and Human Services is conducting a “comprehensive review” of research involving fetal tissue—and has disrupted an HIV research program in the process.
Cancer immunotherapy has dramatic success in some cases, but not all. Researchers are trying to learn why.
A new report says our warming world will hit all sectors of the U.S. economy, in ways both big and small.