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THE FIFTH DIMENSION
Gravitational waves could
let us see hidden worlds
Know yourself inside out to
better understand others
LISTEN TO YOUR HEART
BLOOMIN’ TASTY
WEEKLY
May 6-12, 2017
The orchids we are
eating to extinction
BREATHE EASY
Is air pollution really all that bad for us?
TIME
CRYSTALS
The impossible state of matter
that will outlast the universe
No3124
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9
Science and technology news
www.newscientist.com
US jobs in science
TIGER BY THE TAIL
One man’s hunt for Australia’s lost thylacines
Intellectual
indulgence
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FEEDING MINDS FOR 60 YEARS
CONTENTS
News
Volume 234 No 3124
This issue online
newscientist.com/issue/3124
Leader
5
The UK government’s attitude to air
pollution absolutely stinks
8
The fifth
dimension
Gravitational waves
could reveal hidden
layers of the universe
News
UPFRONT
Cassini’s dive through Saturn’s rings. Heart
surgery’s deadly infection risk
8 NEWS & TECHNOLOGY
Gadget stops interruptions at work. Harmful
immune reaction could cure HIV. Use your
heartbeat to read others’ minds. Chimp tool
use is a family affair. Complexity could hint
at alien life. Chatbots that discuss the news.
Goya might have had rare autoimmune
condition. Electric shocks fix bad running
technique. Did Neanderthals reach Americas
first? Fiery plume keeps Scotland afloat.
Universal rules of mammal defecation
19 IN BRIEF
Robots learn manners. Melting moons could
host life. Bears do the twist to leave scent
6
On the cover
28
Time crystals
The impossible state of
matter that will outlast
the universe
SXS
8
10
32
35
40
The fifth dimension
Gravitational wave insight
Listen to your heart
Know yourself to
understand others
Bloomin’ tasty
Eating orchids
Breathe easy
Is air pollution that bad?
Tiger by the tail
One man’s hunt for
Australia’s lost thylacines
Analysis
22
DIY gun control
The people taking gun
safety into their own hands in the US
24 COMMENT
Executions reignite lethal injection debate.
Machine revolution is surprisingly popular
25 INSIGHT
Liberals are just as biased as conservatives
Cover image
Simon Danaher
Aperture
26
Pink mountains light up in otherworldly fjord
Features
32
Bloomin’ tasty
BLICKWINKEL/ALAMY STOCK PHOTO
Features
28
Time crystals
(see above left)
32
Bloomin’ tasty
(see left)
35
Breathe easy
Is air pollution really all
that bad for us?
40
PEOPLE
One man’s hunt for Australia’s thylacines
The orchids we are
eating to extinction
Culture
42
Zeroes to heroes
Did culture give us our
astonishing way with numbers?
44
Useless beauty
We may have got the
evolution of beauty all wrong
Coming next week…
Why be conscious?
Hedge your bets
The improbable origins of our unique mind
Implausible breakthroughs that are worth a wager
Regulars
52
55
56
57
LETTERS
Levels of brain structure
OLD SCIENTIST
Mays past
FEEDBACK
Restoring water’s memories
THE LAST WORD
Whither weather?
6 May 2017 | NewScientist |
3
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