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Scientific American - October 2025

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Dans ce numéro

Voyage to Nowhere
An abandoned plan to visit another star highlights the perils of billionaire-funded science

The Growing Threat of Landslides

Origin of Bird Migration

The Lives of Dead Trees

THE DAWN OF POLAR BIRD MIGRATION
Fossils hint at when birds began making their mind-blowing journey
to the Arctic to breed.
BY LAUREN N. WILSON AND DANIEL T. KSEPKA

Drink Deep

New tech pulls fresh water from the bottom of the sea

4 mins

Self-Destruct

This planet triggers flares on its star—spelling its ultimate doom

3 mins

People Watching

Our social voyeurism may have deep evolutionary roots

2 mins

Echolocation Touch

Dolphins' echolocation may be more like feeling than like seeing

3 mins

Neural Stretch

Scientists map a mouse's peripheral nervous system in unprecedented detail

2 mins

Search Broadly

The way you search the Internet can reinforce your beliefs—without you realizing it

2 mins

Why Knot

Mathematicians unravel a long-standing conjecture about knot theory

2 mins

VOYAGE TO NOWHERE

An expensive and ambitious plan for interstellar travel has quietly disappeared

10+ mins

The Landslide in Your Backyard

As climate change brings more intense rain to the mountains, dangerous debris flows are on the rise

10+ mins

The Dawn of Polar

Fossils hint at when birds began making their mind-blowing journey to the Arctic to breed

10+ mins

The Lives of Dead Trees

Forest ecologist Mark Harmon has been exhaustively examining dead logs for 40 years, and he's found a complex world few people see

10+ mins

Cultivating Resilience

Early research suggests that Alzheimer's risk can be mitigated through diet, exercise and social stimulation. But definitive studies remain elusive

9 mins

A Multipronged Assault

A new understanding of Alzheimer's is leading to a variety of new treatment approaches

2 mins

A Dangerous Silver Bullet

Drugs that hit an Alzheimer's target are gaining traction. Some neurologists remain dubious

9 mins

Decoding Blood

New biomarkers promise easier and earlier detection of Alzheimer's, but the results aren't always clear

9 mins

The Care Abyss

As dementia cases rise, memory-care facilities are shuttering. A national collaboration wants to help solve the looming long-term-care challenge

8 mins

Prevention Intervention

The evidence is clear that racial discrimination, physical health and the environment contribute to Alzheimer's and other dementias. Now researchers are looking for ways to intervene

10+ mins

Fast Fashion Needs a Green Makeover

A more circular economy in textiles will look good on everyone

4 mins

Science Makes the U.S. a Great Nation

History tells us what happens when great nations attack science

4 mins

How a Tiny Brain Region Guides Generosity

Whether and how much we help others may be determined by the brain's basolateral amygdala

6 mins

What I Wish Parents Knew about Social Media

I study social media for a living. Here's how parents can help their kids use it safely and productively

5 mins

A Block-Stacking Problem with a Preposterous Solution

In principle, this impossible math allows for a glue-free bridge of stacked blocks that can stretch across the Grand Canyon- and into infinity

5 mins

Pets, Health and People

Only when human-pet relationships are strong, it seems, do owners get physical and mental benefits from their animals

4 mins

Biological Age vs. Chronological Age

Investigating the science and hype of biological age tests

6 mins

Can We Survive the Death of the Sun?

In a few billion years the sun will turn into a red giant star

4 mins

Lire toutes les histoires de Scientific American

Scientific American Description:

Éditeur: Springer-Nature-America,-Inc

Catégorie: Science

Langue: English

Fréquence: Monthly

Scientific American covers the most important and exciting research, ideas and knowledge in science, health, technology, the environment and society. It is committed to sharing trustworthy knowledge, enhancing our understanding of the world and advancing social justice.