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Explore the most exciting new ideas and emerging concepts in science, health, technology and the environment with New Scientist’s exclusive in-depth articles, interviews and long reads.
Senior women exercising at home

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How the immune system changes with age and why

We are gaining a better understanding of the effects of ageing on the immune system, with some surprising findings that it’s not all downhill after 65

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This image may not be used in educational posters ^BCell-mediated immune response,^b computer artwork. This type of immune response is most often used against intracellular pathogens, such as viruses. The viruses (gold) are phagocytosed (engulfed) by macrophage cells (green), a type of white blood cell. Fragments of viral protein (antigen) are displayed on the macrophage's surface. The antigen is recognised by a helper T lymphocyte (purple, centre and right), which secretes chemicals to activate other immune cells, including cytotoxic T lymphocytes (purple, left and bottom). The cytotoxic cells release chemicals that cause the macrophages to disintegrate and die, killing the viruses inside as well.

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How to tell if your immune system is weak or strong

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Banded mongoose group approaching with curiosity (Mungos mungo). Maasai Mara National Reserve, Kenya. March 2018.

Life

Inside the complex and extremely violent world of warring mongooses

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Polycystic ovary syndrome

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A better understanding of PCOS offers fresh hope for new treatments

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Neil Turok mirror universe

Physics

Neil Turok on the case for a parallel universe going backwards in time

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https://www.usgs.gov/media/images/mineral-laden-water-emerging-hydrothermal-vent Mineral-laden water emerging from a hydrothermal vent on the Niua underwater volcano in the Lau Basin, southwest Pacific Ocean. As the water cools, minerals precipitate to form tower-like ?chimneys.? Image taken during 2016 cruise ?Virtual Vents.?

Earth

The mysterious underwater avalanches reshaping Earth

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Fresh ideas about the causes of depression are bringing new treatments

Mind

Fresh ideas about the causes of depression are bringing new treatments

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Web3 promises to reclaim the internet from tech giants – will it work?

Technology

Web3 promises to reclaim the internet from tech giants – will it work?

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European Eel (Anguilla anguilla) group being released during fisheries management study, Herault, France

Life

How we finally tracked European eels all the way to the Sargasso Sea

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Logic underpins knowledge – but what if logic itself is flawed?

Mind

Logic underpins knowledge – but what if logic itself is flawed?

We use logic to build facts into systems of thought, but paradoxes force us to question what we think we know. And it could be worse, because logic may not be sufficient to comprehend reality

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Mathematics

Why maths, our best tool to describe the universe, may be fallible

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Physics

How AI is shifting the limits of knowledge imposed by complexity

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Mind

Why some aspects of physical reality must be experienced to be known

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Physics

How can we understand quantum reality if it is impossible to measure?

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