New Scientist - 26.10.2019

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”