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an illustration of men and women with their brains superimposed over the heads
Is there really a difference between male and female brains? Emerging science is revealing the answer. Brain scans, postmortem dissections, artificial intelligence and lab mice reveal differences in the brain that are linked to sex. Do we know what they mean?
A close-up of a doctor loading a syringe with a dose of a vaccine
'Vaccine rejection is as old as vaccines themselves': Science historian Thomas Levenson on the history of germ theory and its deniers Live Science spoke with author Thomas Levenson about his new book on the history of germ theory.
An illustration of colorful lines converging to make the shape of a human iris and pupil
Scientists hijacked the human eye to get it to see a brand-new color. It's called 'olo.' Using an experimental technique called "Oz," researchers stimulated the human retina such that people saw a brand-new color.

Latest about Health

A man putting on shoes for indoor cycling

Best shoes for Peloton and indoor cycling 2025: Up your game with the best cycling footwear

By Sam Hopes last updated

BUYING GUIDE The best cycling shoes you can buy in every category, from Peloton to Shimano RC1.

BUYING GUIDE
A man walking in the park checking his fitness tracker

Best fitness trackers 2025: Measure steps, sleep, exercise performance and more

By Andrew Williams, Anna Gora last updated

Buying Guide These are the best fitness trackers you can buy in every category, from Amazfit Balance and Garmin Fenix 8 to TicWatch Atlas.

Buying Guide
A close-up image of a mosquito ingesting a blood meal from a person's hand.

The rare mosquito-borne illness that causes deadly brain inflammation

By Emily Cooke published

Viruses, Infections & Disease
Garmin fēnix 7X Sapphire Solar on an Live Science deals background

The Garmin fēnix 7X Sapphire Solar is one of the best smartwatches ever made, and it now has a huge $360 discount at Best Buy

By Paul Brett published

Deals The premium Garmin fēnix 7X Sapphire Solar watch is now 40% off at Best Buy.

Deals

Parasitic worm raises risk of cervical cancer

By Clarissa Brincat published

A parasitic worm may raise the risk of cervical cancer through several mechanisms, scientists have found, although HPV remains the primary driver behind the disease.

Cancer

Cancer: Facts about the diseases that cause out-of-control cell growth

By Mindy Weisberger published

Learn facts about cancer, in which abnormal cell growth destroys healthy body tissues.

Cancer
A woman checking her fitness watch

Best budget fitness trackers 2025: Cheap but mighty

By Maddy Biddulph, Anna Gora last updated

Buying Guide These are the best budget fitness trackers you can buy in every category, from Fitbit Inspire 3 and Xiaomi Smart Band 9 to Garmin Forerunner 165.

Buying Guide
Illustration of coronavirus particles. Coronaviruses are a group of viruses named for their appearance under electron microscopy, where their round-tipped surface spikes make them resemble a crown.

Diagnostic dilemma: Virus caused a man to have hiccups for days on end

By Mindy Weisberger published

In an unusual case, a man's multiday bout of hiccups was triggered by a respiratory infection.

Viruses, Infections & Disease
A man rowing on a rowing machine in a living room

Best rowing machines 2025: Top 6 picks from our fitness experts

By Harry Bullmore, Anna Gora last updated

Buying Guide These are the best rowing machines you can buy in every category, from Concept2 RowErg and Ergatta Rower to Hydrow Wave.

Buying Guide
A selection of Garmin and Fitbit watches on a pink background

Fitbit vs Garmin: Which one is worthy of a place on your wrist?

By Andrew Williams, Lloyd Coombes last updated

Buying Guide Here we’ll compare Garmin vs Fitbit, including all the models, features, services and more.

Buying Guide
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