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Health

Huge boom in teen HIV cases could cause epidemic to spiral

Many teens with HIV in South Africa have had the virus all their lives. Initiatives are now springing into action to help prevent further teen infections

News

microbes

Technology

Bacteria made to turn sewage into clean water – and electricity

News

Orangutan learns to mimic human conversation for the first time

Life

Orangutan learns to mimic human conversation for the first time

News

An infant with microcephaly caused by zika infection

Health

Zika epidemic could burn out in 3 years but return after 10

News

Clinton waves in front of a stage curtain while Sanders emerges from the wings behind her

Earth

Sanders turns the heat up to make Clinton a real climate champ

Comment

Many bottles of alcohol on a table

Health

Alcohol linked to at least seven cancers – not just liver cancer

News

Close up of a white-footed tamarin

Life

City slicker monkeys are overweight and have high cholesterol

News

People wearing

Health

Huge boom in teen HIV cases could cause epidemic to spiral

News

Illustration of two adults and clockface

Health

Fertility facts: How late can you leave it to have a baby?

Features

fertility leader

Life

Who should we believe when it comes to fertility?

Difficult choices over when to start a family are not made any easier by conflicting signals from doctors and fertility clinics

Leader

Technology

1970s science follies look groovy in a new light

Culture

Health

Menopause reversal restores periods and produces fertile eggs

News

Life

Boozy primates seek out nectar with the highest alcohol content

News

Life

Well-travelled chimps more likely to pick up tools and innovate

News