Cassini fits four Saturnian satellites in one frame.

The day starts with chatting about the Black Death over bagels, then detours to garbage piles and ends with a goofy interview moment —one of the best days I’ve spent in a long time. Some of what happened during this visit with crow researchers in Ithaca, N.Y., went into the story “When birds go to town.” Just a single sentence, though, deals with one of the most entertaining aspects of a day with Team Crow. The three researchers I meet — Anne Clark and Jenn Campbell-Smith, both of Binghamton University and Kevin McGowan of the Cornell Lab of Ornithology — not only know crows, but...

Museums in New York, California, Florida and Virginia will display the four spacecraft after their final mission in June.

New administration rules are a step in the right direction, but much work remains, says a watchdog group.