In June, 2017, thousands of scientists from around the world attended the 65^th Annual Conference of the American Society for Mass Spectrometry in Indianapolis. One of the thousands of research projects on display at this year’s conference compared portable man-made sniffers to dog noses. Whose design won?

Scholarly illustrations, museum mock-ups, and even children’s cartoons show tyrannosaurs covered in feathers. Two new fossil descriptions give reasons to doubt the tales of feathered dinosaurs.