WIN GED
TER ROR
ScientificAmerican.com
OCTOBER 2019
A NEW THEORY OF OBESITY
Are ultraprocessed foods to blame?
PAG E
38
REVERSING DEATH
Partially revived pig brains raise hard questions
PAG E
34
ROOM-TEMPERATURE
SUPERCONDUCTORS
Are scientists nearing a breakthrough? PAGE 46
PRESCHOOL PEDAGOGY
Why instilling focus and
language skills fosters success PAGE 68
PLUS
SCIENCE IN CRISIS
The raging debate over statistical significance PAGE 62
How pterosaurs
evolved to dominate
the Mesozoic skies