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About: The latest science news. ScienceAlert publishes independent, fact-checked reporting on health, space,
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Human Arms Keep Growing an Extra Artery, Showing We're Still Evolving

Human Arms Keep Growing an Extra Artery, Showing We're Still Evolving

Dentists Could Soon 'Regrow' Your Tooth Enamel With a Simple Gel

Dentists Could Soon 'Regrow' Your Tooth Enamel With a Simple Gel

Scientists Recreate Rare Pigment Behind Octopus 'Superpowers'

Scientists Recreate Rare Pigment Behind Octopus 'Superpowers'

Common Supplement Shows Concerning Link to Heart Failure

Common Supplement Shows Concerning Link to Heart Failure

Using Tobacco With Cannabis Is Tied to Unique Brain Changes, Small Study Finds

Using Tobacco With Cannabis Is Tied to Unique Brain Changes, Small Study Finds

Giant Analysis Reveals The Deadliest Risks of Tropical Cyclones

Giant Analysis Reveals The Deadliest Risks of Tropical Cyclones

Common Sweetener Could Damage Critical Brain Barrier, Risking Stroke

Common Sweetener Could Damage Critical Brain Barrier, Risking Stroke

Hidden Rhythms in Your Brain And Gut Share a Surprising Link

Hidden Rhythms in Your Brain And Gut Share a Surprising Link

Massive New Map Reveals 300,000 Km of Ancient Roman Roads

Massive New Map Reveals 300,000 Km of Ancient Roman Roads

Longevity Supplement 'Rejuvenates' Aging Immune Cells in Just 4 Weeks

Longevity Supplement 'Rejuvenates' Aging Immune Cells in Just 4 Weeks

Scientists Found 2 Existing Drugs Can Reverse Alzheimer's Brain Damage in Mice

Scientists Found 2 Existing Drugs Can Reverse Alzheimer's Brain Damage in Mice

Arachnid Megacity Discovered in Cave May Be World's Largest Spider Web

Arachnid Megacity Discovered in Cave May Be World's Largest Spider Web

Alien Probes Could Already Lurk in Our Solar System, Study Says

Alien Probes Could Already Lurk in Our Solar System, Study Says

21-Year Study Links Gum Disease And Cavities to Higher Stroke Risk

21-Year Study Links Gum Disease And Cavities to Higher Stroke Risk

Hundreds of Genes Act Differently in Male vs Female Brains, Scientists Discover

Hundreds of Genes Act Differently in Male vs Female Brains, Scientists Discover

Your Gut's Methane-Making Microbes Could Secretly Turn Fiber Into Extra Calories

Your Gut's Methane-Making Microbes Could Secretly Turn Fiber Into Extra Calories

Space Junk Likely Struck China's Shenzhou-20, Delaying Crew's Return

Space Junk Likely Struck China's Shenzhou-20, Delaying Crew's Return

Oldest Known Maya Monument Could Be a Map of The Universe

Oldest Known Maya Monument Could Be a Map of The Universe

The World's Oldest Known Cave Art Wasn't Made by Our Species

The World's Oldest Known Cave Art Wasn't Made by Our Species

A Simple Eye Scan Could Flag Heart Risks – And How Fast You're Aging

A Simple Eye Scan Could Flag Heart Risks – And How Fast You're Aging

Most Powerful Black-Hole Flare Ever Recorded Shone Like 10 Trillion Suns

Most Powerful Black-Hole Flare Ever Recorded Shone Like 10 Trillion Suns

How to See Tonight's Beaver Supermoon – The Biggest And Brightest Since 2019

How to See Tonight's Beaver Supermoon – The Biggest And Brightest Since 2019

A Colossal Wave Is Rippling Through The Milky Way, Gaia Data Reveals

A Colossal Wave Is Rippling Through The Milky Way, Gaia Data Reveals

Memory Problems Are Surging in Adults Under 40, Large US Study Finds

Memory Problems Are Surging in Adults Under 40, Large US Study Finds

A Rare Genetic Condition Can Turn Healthy Foods Dangerous

A Rare Genetic Condition Can Turn Healthy Foods Dangerous

Should Bacon Come With a Cancer Warning?

Should Bacon Come With a Cancer Warning?

The Early Universe Let Black Holes Break The Rules, Briefly

The Early Universe Let Black Holes Break The Rules, Briefly

Eerie 'Skull' Appears in a Giant Volcanic Pit in The Sahara

Eerie 'Skull' Appears in a Giant Volcanic Pit in The Sahara

There's a Surprisingly Simple Way to Stop Crying Over Your Onions

There's a Surprisingly Simple Way to Stop Crying Over Your Onions

Scientists Finally Solve 70-Year Mystery of Sun's 'Impossible Heat'

Scientists Finally Solve 70-Year Mystery of Sun's 'Impossible Heat'