Readers weigh in on dinos, dark matter and more
Your letters and comments on the November 12, 2016, and November 26, 2016, issues of Science News
Prehistoric tweet
Researchers uncovered the fossilized voice box, called a syrinx, of an ancient bird that lived 68 million to 66 million years ago. The bird may have sounded like a honking duck, Meghan Rosen reported in “Ancient avian voice box unearthed” (SN: 11/12/16, p.