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Health

Health

How best to catch up on rest and pay off your sleep debt

If you've missed out on sleep, it is possible to catch up. But is it better to try to do it all in one go or spread out over time – and is it really so bad to sleep in at the weekend?

Features

Health

The surprising relationship between your microbiome and sleeping well

Features

Health

Why your chronotype is key to figuring out how much sleep you need

Features

Health

Why sleep quality is so important – and so difficult to measure

Features

Health

The science of exercise: Sticking to your New Year’s workout plan

Regulars

Health

US reports first human death related to bird flu

News
A crystal jellyfish (Aequorea victoria)

Technology

Glowing biological quantum sensor could track how cells form

News
False-colour scanning electron micrograph of skin from the palm of the hand of a 30 year old man. The skin here is neatly arranged in ridges. Sweat pores are seen as miniature craters along the ridges. The cells forming the external surface of the skin, or epidermis, have been flattened & hardened by deposition within them of the fibrous protein keratin. This tough, dead layer of cells is shed continuously & is replaced by new, maturing cells which take a month to migrate from the base of the epidermis. Magnification: x20 at 6x4.5cm size

Health

Forget aesthetics, the reason to look after our skin should be health

Comment

Health

The scientists on a mission to catch farts for the good of our health

Features

Health

Abracadabra: An exclusive sci-fi short story for 91av

The award-winning science fiction and fantasy author Nnedi Okorafor journeys to the near future in this unsettling short story

Culture

Technology

Banning scary-sounding ideas can comfort but does more harm than good

Comment

Health

What to know about creatine, the gym supplement with wide benefits

News

Health

Could brain freezing cure all disease – indirectly?

Culture

Environment

Extreme heat is now making cities unlivable. How can we survive it?

Features