June 2022, ScientificAmerican.com 1June 2022VOLUME 326, NUMBER 6Steve Brusatte
On THe COVeR
Cimolestes, the size of a small rodent, lived
alongside dinosaurs during the Cretaceous
epoch. It belonged to a group of mammals
known as the eutherians, which gave rise to
the placentals. Placental mammals give birth
to live, well-developed young. They consti tute
the largest group of mammals alive today
and in clude creatures as disparate as bats,
whales and humans.
Illustration by Beth Zaiken.28
PALEONTOLOGY
28 How Mammals Prevailed
They scurried in the shadows
of dinosaurs for millions of years
until a killer asteroid created
a new world of evolutionary
opportunity. By Steve Brusatte
NEUROSCIENCE
36 Constructing the World
from Inside Out
The brain probes your physical
surroundings to select just
the information needed to survive
and flourish. By György Buzsáki
ASTRONOMY
44 Mysterious
Cosmic Detonations
Twenty years after their discovery,
fast radio bursts are coming
into focus. By Adam Mann
CHILD DEVELOPMENT
48 The Path to
Better Childhoods
Brain science provides a clearroad map for policies that give
children more learning abilities
and brighter futures—yet the U.S.
continues to wander off course.
By Dana Suskind
and Lydia DenworthSPECIAL REPORT
S1 Innovations In Health Equity
S3 Discrimination
Is Heartbreaking
By Jyoti Madhusoodanan
S12 Mental Health Care’s
Great Divide
By Sarah Sloat
S16 The Oldest Pandemic
By Sofia Moutinho
S21 Profiles in Health Equity
By Julia Hotz
S24 Gatekeepers of Health
By David MalebrancheBanca do Antfer
Telegram: https://t.me/bancadoantfer
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