New Scientist 3117 2017 03 18.pdf

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IMPOSSIBLY COLD
Why we can never
reach absolute zero
END OF THE WORLD
How people behave when
they think it’s all over
EVERY DOG HAS HIS DNA
Genome project digs
into origin of personality
WEEKLY
March 18-24, 2017
DADS ANONYMOUS
The battle over sperm donor privacy
WHAT’S UP
WITH GRAVITY?
The force that rules the universe
makes no sense
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WHALES MEET AGAIN
Humpback herds are a return to the past
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CONTENTS
News
Volume 233 No 3117
This issue online
newscientist.com/issue/3117
Leaders
5
How to regulate backyard gene editing.
Keep an open mind on dark matter
8
First CRISPR test on
viable embryos reveals
roadblocks ahead
DR YORGOS NIKAS/SCIENCE PHOTO LIBRARY
Gene editing
human embryos
News
UPFRONT
Smoking “endgame” in Sweden. No jab,
no play for preschoolers. Tim Berners-Lee
speaks out on fake news
8 NEWS & TECHNOLOGY
Whales gather in super-groups.
Helmet display gives motorcycle rear-view.
You absolutely can’t reach absolute zero.
Mystery particles spread brain injury.
Video game test emulates end of the
world. Metabolism starts up without life.
Enhancing your mind’s eye. Dogs deceive
humans. Robot that expresses pain.
Microbes may hop between newly found
planets. Artificial life a step closer. Machine
learning reveals Hollywood gender bias
19 IN BRIEF
Oldest plant fossil. Memory champs’ secret
weapon. Moons in the outer solar system
6
On the cover
28
What’s up with
gravity?
The force that rules
the universe makes
no sense
10
Impossibly cold
Why we can never reach
absolute zero
11
End of the world
How people behave
when we think its all over
38 Every
dog has his DNA
Genome project digs into
the origins of personality
9
Whales meet again
Humpback herds are a
return to the past
Analysis
22
Is anonymity crucial for sperm donors?
24 COMMENT
Obamacare’s replacement looks ill-judged.
No wonder faith in food remains fragile
25 INSIGHT
When breastfeeding ideology starves babies
Cover image
Julien Pacaud
Aperture
Features
26
Disappearing mirage in the Dubai desert
34
Your leaky
brain
The secret
dialogue between
brain and body
MARTIN LEON BARRETO
Features
28
What’s up with gravity
(see above left)
32
PEOPLE
Stacy McGaugh is a dark matter
doubter
34
Your leaky brain
(see left)
38
Every dog has his DNA
Genome project digs into Fido’s personality
Culture
42
No flies here
The real story of zebra stripes
43
Powerfully useless
Now, more than ever,
we need knowledge for its own sake
44
Thar she blows
Canada’s blue whale show
Coming next week…
Ultimate mind map
Gaps in the brain’s wiring are what make
you smart
52
55
56
57
Regulars
LETTERS
The perils of rescuing whales
SIGNAL BOOST
Icy trek to beat bullying
FEEDBACK
Functional water
THE LAST WORD
Sunset rainbow
How to feed 10 billion
Termites, grass and synthetic milk on the menu
18 March 2017 | NewScientist |
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