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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

Health

Why looking after your skin is so crucial to your long-term health

Technology

How to fix computing’s AI energy problem: run everything backwards

Microneedling demonstration by Dr. Jimmy Poon where a number of local Estheticans were introduced to the procedure that some see as unsafe.Dr Poon uses the Microneedle roller on the face of Esthetician Karen Clarke.(October 30 11)RICK EGLINTON/TORONTO STAR. (Photo by Rick Eglinton/Toronto Star via Getty Images)

Health

What the evidence says about the consequences of cosmetic tweakments

Close up color image depicting freshly cooked take away vegetarian vegan food.

Health

What should we eat to give us better, healthier skin

SWITZERLAND. St Moritz. 2003.

Health

Should you really wear sunscreen all year round, even in winter?

CXRC8E People taking a mud bath, spa on Lake Koycegiz, Sultaniye, near Dalyan, Mugla Province, Turkey, Asia Minor

Health

How to nurture your microbiome to look after your skin

DARMSTADT, GERMANY - MARCH 19: A student sits the English school leaving examination (Abitur) at the Berthold Brecht School on March 19, 2020 in Darmstadt, Germany. It is the first day of the university-entrance diploma exams in Hesse. Due to the coronavirus outbreak, all schools in Germany are closed, however, it has been decided that the Abitur should take place with the necessary safety precautions in place. Everyday life in Germany has become fundamentally altered as authorities tighten measures to stem the spread of the coronavirus (COVID-19). (Photo by Thomas Lohnes/Getty Images)

Health

How your mental state and stress levels influence your skin

A customer walks down a skincare aisle at an Ulta Beauty Inc. store in New York, U.S., on Thursday, May 31, 2018. Ulta reported late Thursday??that its comparable sales rose 8.1 percent in the first quarter from??a year earlier. The increase was driven by all the right things: A booming 48 percent increase in digital sales,??as well as 5.1 percent growth in transactions and a 3 percent increase in average ticket. Photographer: Gabby Jones/Bloomberg via Getty Images

Health

The only four skincare ingredients that have been proven to work

Table of contents

Leaders

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

New research shows that ensuring the skin is in excellent condition should be a priority for anyone who wants to increase their chances of living a long life

News

Technology

Flying electric taxis look set to finally take off in 2025

Electric vertical take-off and landing (eVTOL) aircraft are on track to start commercial passenger carrying services in 2025, but can they stand out from conventional helicopters?

Space

Could 2025 be the year we finally start to understand dark energy?

Health

We’ll learn about Ozempic’s potential for Alzheimer’s disease in 2025

Environment

COP30 host Brazil aims to get 2025 climate talks back on track

Technology

Humanoid robots will march into factories and homes in 2025

Environment

Direct CO2 capture from the atmosphere will scale up massively in 2025

Environment

Disease-resistant pork may go on sale in 2025 thanks to gene editing

Physics

We could discover a new element on the periodic table in 2025

Space

These are all of the missions heading to the moon in 2025

Aperture

Canton Z?rich, Switzerland Ice has formed around a waterfall near Gibswil. Icicles growing from the top, and ice formations growing from the bottom have coalesced into one continuous column. Page 16 + 17

Earth

Remarkable images capture the diversity of Earth’s ice formations

In the new photographic collection Our Frozen Planet, Michael Hambrey and J眉rg Alean set out to celebrate the world's ice in all its forms

Features

Health

Why looking after your skin is so crucial to your long-term health

Emerging evidence suggests a surprisingly strong connection between keeping your largest organ healthy and staving off age-related conditions like diabetes, heart disease and dementia

Health

What should we eat to give us better, healthier skin

Health

Should you really wear sunscreen all year round, even in winter?

Health

The only four skincare ingredients that have been proven to work

Health

What the evidence says about the consequences of cosmetic tweakments

Health

How your mental state and stress levels influence your skin

Health

How to nurture your microbiome to look after your skin

Technology

How to fix computing’s AI energy problem: run everything backwards

Culture

Woman in her late 30s reading a book in the mountain cabin, relaxing in the hammock next to the fireplace.

Comment

The best popular science books to look forward to in 2025

Understanding why we think the way we do is a hot topic for many of 2025鈥檚 books 鈥� that and finding new ways to re-evaluate old 鈥渢ruths鈥�, says Simon Ing

Space

The best science fiction novels to look forward to in 2025

More

Technology

Should chatbots have rights 鈥� and should we care?

Some prominent researchers argue that we should pay heed to the welfare of AIs. Are they right, wonders Alex Wilkins

Space

The Vera C. Rubin Observatory gets started next year. I can’t wait

Space

The stargazing events to look forward to in 2025

Tom Gauld on making new year’s resolutions 鈥� or not

Twisteddoodles on an ill-advised new year’s detox

Regulars

Is Christmas better now it’s over? Don’t worry, that’s common

Feedback was not all that surprised to learn that we tend to only see major rituals as positive experiences once they have finished

This Week鈥檚 Letters

Why do we only use 12 notes in Western music?

When I die, what happens to my microbiome?

This week鈥檚 new questions

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