Tests suggest that nightshade goo contains lots of sugar and some amino acids that may help attract protective ants like Lasius niger (shown). Researchers suspect that a common hormone called jasmonic acid induces its production.
CATCHING Z’S While sleeping, this Australian dragon (Pogona vitticeps) shows brain wave patterns similar to those of slumbering birds and mammals.
Stephan Junek/MPI for Brain Research
Like all bearcats, Bok, who lives at Carolina Tiger Rescue in North Carolina, smells of popcorn. Scientists have traced the signature scent to a chemical found in rice and — yes — popcorn.