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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

The Saucony Ride 15 running shoes being tested during our full review

Best running shoes for supination 2025: Find the perfect fit for your feet

By Harry Bullmore last updated

Buyers guide These are the best running shoes you can buy in every category, from Saucony Ride 16 and Brooks Glycerin 20 to Hoka Mach X.

Buyers guide
A smiling woman exercising on a cross-trainer at home

Best exercise machines for weight loss 2025

By Ruth Gaukrodger last updated

BUYING GUIDE Our favorite cardio machines, from the iconic Peloton bike to the meaty NordicTrack X22i treadmill.

BUYING GUIDE

Lab-grown teeth could offer alternative to fillings and implants, scientists say

By Jess Thomson published

Scientists in the U.K. have developed a new material that may allow them to grow teeth in the lab, which could provide an alternative to fillings and dental implants someday.

Health
A picture of Ingrida Domarkienė sat at a lab bench using a marker to write on a test tube. She is wearing a white lab coat.

DNA from across the ages can reveal migrations of Iron-Age people and genes that protected against Chernobyl radiation

By Emily Cooke published

Ingrida Domarkienė, a geneticist at Vilnius University in Lithuania, discusses the exciting developments made possible by studying ancient and modern DNA.

Genetics
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

Mosquitoes that transmit La Crosse virus disease live in wooded areas in the U.S., mainly in the Upper Midwest, Mid-Atlantic and Southeast.

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
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