NEWS
IN BRIEF
362 News at a glance
IN DEPTH
364 Vaccines may cause rare,
Long Covid–like symptoms
Researchers probe reports of brain fog,
headaches, and blood pressure
swings By J. Couzin-Frankel and G. Vogel
366 After Omicron, some scientists
foresee ‘a period of quiet’
The variant’s modest toll in many countries
has led to a sense of optimism. But new
surprises are likely By K. Kupferschmidt
367 NASA’s Webb telescope reaches
deep space home
Operators begin to fine-tune mirror segments
after parking scope in L2 orbit By D. Clery
368 Alternatives to fecal transplants
near approval
Trial shows spore-filled pill derived
from human stool treats tough
gut infections By K. Servick
PODCAST
370 Psychedelics without hallucinations?
Chemical relatives of LSD appear to treat
depression in mice By R. F. Service
RESEARCH ARTICLE p. 403
371 Why a high-profile China
Initiative case collapsed
U.S. government drops all charges against
MIT engineering professor Gang Chen
By J. Mervis
FEATURES
372 Paranormal activity
Why is Harvard University astrophysicist
Avi Loeb working with ardent UFO believers?
By K. Kloor
358 28 JANUARY 2022 • VOL 375 ISSUE 6579 science.org SCIENCE
CREDITS: (FROM TOP TO BOTTOM INGO ARNDT/MINDEN PICTURES; IMAGE: BIOMEDICAL IMAGING UNIT/SOUTHAMPTON GENERAL HOSPITAL/SCIENCE SOURCE
INSIGHTS
PERSPECTIVES
376 Staying strong during hibernation
The microbiota of hibernating squirrels
salvages urea to replenish amino acids
By F. Sommer and F. Bäckhed
REPORT p. 460
377 Intensifying existing urban
wastewater
Aerobic granular sludge offers
improvements to treatment processes
By M.-K. H. Winkler
and M. C. M. van Loosdrecht
379 How pH affects electrochemical
processes
Three mechanisms underlie the impact
of pH on the activity of electrochemical
reactions By N. Govindarajan et al.
380 The African trees that
conquered Asia
Fossil pollen from dipterocarps
show shared floristic heritage
between Asia and Africa
By C. Hoorn and J. Ying Lim
REPORT p. 455
382 Modeling tuberous sclerosis
with organoids
Single-cell profiling reveals
a different path for the development
of brain lesions
By R.A. Ihrie and E. P. Henske
RESEARCH ARTICLE p. 401
383 Human cortical interneuron
development unraveled
New understanding of principles of
neurogenesis widens the use
of preclinical models By N. Kessaris
RESEARCH ARTICLE p. 402
28 JANUARY 2022
VOLUME 375 • ISSUE 6579
CONTENTS
368
376
& 460