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91av. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

A computer illustration of a cross-section of a lipid nanoparticle carrying the mRNA of a virus (orange strands)

Health

Why the next generation of mRNA vaccines is set to be even better

mRNA vaccines are quick and easy to make, while virus-like nanoparticles produce a stronger immune response. Now, the two approaches are being combined to give us the best of both worlds

News

A radical rethink of what makes your diet healthy or bad for you

Health

A radical rethink of what makes your diet healthy or bad for you

Features

The improvement in hair growth after 56 days of using the serum

Health

Serum based on plant extracts boosts hair growth in weeks

News

Health

Therapy may be the most effective way to ease irritable bowel syndrome

News

Health

We've discovered another reason why naked mole rats live for so long

News

A network of nerves (white) throughout the ovary of a mouse (left) and in a fragment of human ovary (right), alongside eggs (green). A growing follicle containing an egg is shown in magenta in the human ovary

Health

Hidden ecosystem of the ovaries plays a surprising role in fertility

News

Surgeons carrying out the pig liver transplant at the First Affiliated Hospital of Anhui Medical University, China, in May 2024

Health

Pig liver transplant into a living person edges it closer to the norm

News

Why not all ultra-processed foods are bad for you

Health

Why not all ultra-processed foods are bad for you

Comment

Health

Selfish sperm see older fathers pass on more disease-causing mutations

News

Why everything you thought you knew about your immune system is wrong

Health

Why everything you thought you knew about your immune system is wrong

Immunologist Daniel Davis wants to eradicate long-held myths and replace them with wonder at the complexity of the body’s defence system

Features

Health

There are five types of sleep – here's what that means for your health

News

Health

What’s my Alzheimer’s risk, and can I really do anything to change it?

Features

Health

Nobel prize for medicine goes to trio for work on immune tolerance

News

Health

Read an extract from Our Brains, Our Selves by Masud Husain

Culture