Science News - USA (2021-11-20)

http://www.sciencenews.org | November 20, 2021 1

FROM TOP: JON CHERRY/GETTY IMAGES; GUILLERMO BLANCO; JPL-CALTECH/NASA

VOL. 200 | NO. 9

News

9

Departments

2 EDITOR’S NOTE

4 NOTEBOOK

How Neandertals may

have hunted birds; the

fastest-spinning star

26 REVIEWS & PREVIEWS

Humans have a long

history of interfering

with nature

30 FEEDBACK

32 SCIENCE VISUALIZED

Clear printer ink gets its

hues from structural color

Features

16 Test Results

COVID-19 testing programs in schools can keep

children safe and in the classroom, but challenges

range from deciding on a testing strategy to parental

buy-in. By Betsy Ladyzhets

20 In Search of Extreme Nuclei

COVER STORYA new particle accelerator, the

Facility for Rare Isotope Beams, will explore the limits

of the chemical elements and help physicists learn

how elements form in the distant environs of space.

By Emily Conover

16

COVER Physicists are

probing the extreme

edge of the chart of

isotopes, where atomic

nuclei are least stable.

Erin O’Donnell/National

Superconducting Cyclotron

Laboratory, Andy Sproles/

Oak Ridge National

Laboratory

6 Doctors successfully

attached a kidney from

a genetically modified pig

to a human patient

7 The first known planet

outside the Milky Way

may reside in the spiral

Whirlpool galaxy

8 A hypothesized subatomic

particle was a no-show in

a new experiment

9 Like schoolyard insults,

space rocks may have

bounced off Earth and

stuck to Venus

10 An atomic clock

measured how general

relativity warps time

across a millimeter

11 Sea level rise pushed

some mangroves inland

over 100,000 years ago

12 Some turtle barnacles

appear to wander

in search of better

feeding spots

Flamingos “touch up”

sun-faded feathers to

help attract mates

13 Needles made of ice

create patterns across

rocky landscapes

14 Ceremonial center

designs connect ancient

Maya and Olmec

societies

15 News in Brief

Poaching in Mozambique

may have led to more

naturally tuskless

elephants

Modern domestic horses

originated in Russia,

a genetic analysis finds

Tree rings place Vikings

at a North American site

1,000 years ago

An archaeological site in

Utah records the earliest

known evidence of

tobacco use

4

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