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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.

Health

Resuscitated human retinas respond to light 10 hours after death

Perfusing donor human retinas with blood and oxygen meant they continued to respond to light for up to 10 hours after death, marking a significant step towards eye transplants that restore vision

News

Fluorescence in situ hybridisation (FISH) micrograph of Down's syndrome chromosomes (red) in a foetus' cell nuclei (blue). The FISH technique enables individual chromosomes within the nuclei to be tagged with a fluorescent dye. Here, three copies of chromosome 21 are seen in each nucleus, the cause of Down's syndrome. In a healthy human, each nucleus contains only two copies of chromosome 21. Chromosomes are the parts of a nucleus responsible for carrying the genetic code. Down's syndrome is a genetic disease which causes mental retardation and typically flattened features. It affects around 1 in every 650 babies.

Health

Injection halves risk of chromosome error common in older human eggs

News

Light micrograph of a section through follicles in an ovary. The immature eggs (orange) are surrounded by a fluid-filled cavities (light pink) and granulosa cells (dark pink), which provide immature eggs with nutrients and hormones

Health

Our fertility window could be extended by making ovaries softer

News

Health

Lambs born via IVF using highly immature eggs in major breakthrough

News

Health

Ovary identity shift after menopause may contribute to inflammation

News

Health

5 things to know about sunscreen, according to a skin cancer expert

Comment

Beetroot juice is trending – its benefits go beyond the hype

Health

Beetroot juice is trending – its benefits go beyond the hype

Comment

Mandatory Credit: Photo by Peter Jolly/Shutterstock (9326460i) Forensic scientist Sue Black examines bones from the crypt at Wardlaw Mausoleum to discover if they are the bones of Simon

Health

91av recommends an unsettling deep dive into forensic science

Culture

Health

A type of fibre that stimulates GLP-1 release approved for use in food

News

Health

I’m the first person whose life was saved by CRISPR base editing

When standard leukaemia treatments failed, 13-year-old Alyssa Tapley was told she had only weeks left – but then she was offered an experimental procedure

News

Health

Your menstrual cycle may affect how well vaccines work

News

Health

I have a 100 per cent chance of getting cancer due to a rare gene

Comment

Health

We’ve uncovered a master gene that switches on human development

News

Health

Phages could enable us to hijack vaccine immunity to kill cancer cells

News