26 October 2019 | New Scientist | 3
On the
cover
20 Forgotten nutrient
Why you need more
choline in your life
12 Eco-anxiety
Advice on dealing with
climate worry
44 Cancer killers
How we’re harnessing
viruses to destroy tumours
Coming
next week
The rainmakers
Our planet’s water cycle
depends on vast airborne
rivers generated by trees
News
Views
Features
8 Deepfake dubbing
AI-generated videos are
becoming useful at last
10 Gorilla selfie risk
Our hunt for the perfect photo
may be making apes ill
17 Artificial embryos
Stem cell breakthrough creates
early mouse fetuses without
sperm or eggs
23 Comment
New discoveries are degrading
the concept of a moon
24 The columnist
Could Britain grow most of its
own food, asks James Wong
26 Letters
Community building isn’t
enough to make morality
28 Aperture
Strange and beautiful nature
under the microscope
30 Culture
Refreshing realism in an
exhibition about life on Mars
51 Stargazing from home
How to see six planets this week
52 Puzzles
Cryptic crossword, a goblin
game and a quick quiz
53 Feedback
An operating system for the
apocalypse: the week in weird
54 Almost the last word
Coordinated running and fast
swimming: readers respond
56 The Q&A
Eugenia Cheng on chocolate
and abstract maths
34 The internet at 50
Everything you need to know
about a technology that has
transformed the world
42 Interview with Vint Cerf
One of the net’s founders on
why the best is yet to come
44 Cancer killers
Harnessing viruses to defeat
tumours and strengthen our
immune systems
The back pages
20 The case for choline The nutrient that plant-based diets may lack
Vol 244 No 3253
Cover image: KTSDESIGN/Getty
34 The internet at 50
What next for humanity’s
flawed masterpiece?
42 Interview with Vint Cerf
The net’s founding father on
why he’s still an evangelist
CLAUDIA TOTIR/GETTY IMAGES; NICOLAS REYNARD/NATIONAL GEOGRAPHIC
Insight
15 Lost city of Irasaĝrig 18 The sand dunes on Titan
9 World’s loudest bird 51 A great week for planet-spotting
This week’s issue
14 News
“ When arrested, his blood
alcohol level suggested
he’d had 20 drinks – but he
hadn’t had a single one”