More from Helen Pilcher
Explore the latest news, articles and features
Earth
The great white lie: What snowflakes really look like
Features
Women at work
Careers
Health
Written in blood: Your life history in just one drop
Features
Environment
The third factor: Beyond nature and nurture
Features
Humans
How flower power paved the way for our evolution
Features
Humans
Clone alone: Who needs sex?
Features
Health
Designer glasses correct red-green colour blindness
News
Life
Genes from nowhere: Orphans with a surprising story
Features
Health
The science of voodoo: When mind attacks body
Features
Health
As good as new: Scarless healing
Features
Health
Cancer: The traitors within
Features
Life
Reproduction revolution: The egg and sperm race
Features