Alan Alda's own childhood experience provided the inspiration for a challenge he posed to scientists earlier this year: to describe a flame such that an 11-year-old child can understand what it is. Now, a new question drawn from more than 300 submissions asks scientists to describe what time is, the Associated Press reports.

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The New York Times and ProPublica look into the close relationship between a startup and Memorial Sloan Kettering Cancer Center.

Yahoo News reports millions of dollars are being transferred from NIH, CDC, and other programs to pay for the housing of detained undocumented immigrant children.

In Science this week: in vitro generation of human reproductive cells, and more.

Researchers gave a handful of octopuses MDMA to find that they too act more social on the drug, Gizmodo reports.