We may have inadvertently selected for muscles on dogs’ faces
Enlarge / A muscle flex raises the inner portions of the eyebrow at right. (credit: Waller et al.) Humans domesticated dogs about 30,000 years ago. Since then, we’ve worked with…
Oldest evidence of cannabis smoking found in ancient Chinese cemetery
Enlarge / This is how the braziers were placed in the tomb alongside the deceased. (credit: Xinhua Wu) The broken wooden braziers, unearthed from 2,500-year-old tombs in Western China, contained…