Chemistry

When an asteroid struck Earth about 66 million years ago, it wiped out some 80 percent of the planet's animals, including all of the non-avian dinosuars.

Asteroid That Ended the Dinosaurs Came From Beyond Jupiter, Study Finds

Metal isotopes delivered to Earth by the asteroid reveal it's consistent with space rocks formed in the outer solar system

Astronaut Buzz Aldrin, as photographed by Neil Armstrong on the surface of the moon during the Apollo 11 mission in 1969. Researchers looked at lunar soil samples collected during the Apollo missions for the new study.

Meteorite Strikes Are the Primary Creator of the Moon's Thin Atmosphere, Study Finds

Researchers examined lunar soil samples collected during the Apollo missions to determine which weathering processes contribute most to replenishing the moon's atmosphere

Brahe's mansion, Uraniborg, was located on an island in Sweden. His basement laboratory is represented by the bottom left room in this drawing.

Was This Renaissance Alchemist Ahead of His Time?

New research suggests that Tycho Brahe isolated tungsten nearly 200 years before the metal was identified as an element

Rembrandt van Rijn completed The Night Watch, a group portrait of Amsterdam's local militia, in 1642.

What Is the Secret Ingredient Behind Rembrandt’s Golden Glow?

Scientists found arsenic sulfide pigments in "The Night Watch," arguably the artist's most famous painting

Painted ladies are known for making long migrations over land.

These Stunning Butterflies Flew 2,600 Miles Across the Atlantic Ocean Without Stopping

Researchers combined several lines of evidence to solve the mystery of why a group of painted ladies, which do not live in South America, were found fluttering on a beach in French Guiana

Akira Endo discovered the first statin, a class of molecule that decreases the production of cholesterol. He died June 5 at the age of 90.

Akira Endo, Biochemist Who Found a Way to Fight Heart Disease, Dies at 90

Endo's research paved the way for the development of drugs to treat high cholesterol and reduce the risk of heart attacks or strokes

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How Americans Got Hooked on Counting Calories More Than a Century Ago

A food history writer and an influential podcast host tell us how our thinking about health and body weight has—and hasn’t—evolved ever since Dr. Lulu Hunt Peters took the nation by storm

A protein-DNA interaction, modeled by AlphaFold 3.

Google Releases A.I. That Can Predict How the Human Body's Molecules Behave, Boosting Drug Discovery Research

Called AlphaFold 3, the latest update of the software models the interactions of proteins with DNA, RNA and other molecules for the first time

Toxins from the Colorado River toad have been ingested by some for their psychedelic and medicinal effects.

A Modified Psychedelic Toad Toxin Reduces Signs of Depression and Anxiety in Mice, Study Suggests

Colorado River toads produce a psychoactive toxin that some have claimed has medical benefits. The new research suggests these benefits could be achieved without hallucinations

Humans produce about 400 million metric tons of plastic waste each year. Some chemicals in plastics have been linked to health problems for humans and animals.

Plastics Contain Thousands More Chemicals Than Thought, and Most Are Unregulated, Report Finds

A new database catalogs 16,000 chemicals found in plastics and identifies more than 4,200 that are potentially hazardous to human health and the environment

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Oppenheimer Has a Long History On Screen, Including the Time the Nuclear Physicist Played Himself

Now with 13 Academy Award nominations to its credit, the blockbuster film comes after nearly eight decades of mythologizing the father of the atomic bomb

Colored scanning electron micrograph of a water bear, or tardigrade

How Are Tardigrades So 'Indestructible?' Scientists Finally Have an Explanation

The tiny animals nicknamed "water bears" can endure extreme conditions by entering a deep hibernation with a switch at the molecular level, a new study finds

Marie Curie was the first individual to win two Nobel Prizes.

Building Used by Marie Curie Saved From Demolition

Cultural heritage supporters are hoping to see the facility listed as a protected site

Rembrandt's The Night Watch (1642)

Lead Base Layer Discovered in Rembrandt’s 'The Night Watch'

Researchers analyzed a tiny paint sample from the piece and found a lead-rich layer on the canvas

Adding water to beans before grinding them can help produce a more flavorful brew and cut down on mess, according to a new study.

This Simple Trick Will Help You Brew Better Coffee, According to Scientists

New research explores how moisture affects static electricity and clumping of ground coffee beans

Our ten favorite science books of the year covered everything from astronomy to undersea exploration.

The Ten Best Science Books of 2023

From stories on the depths of the ocean to the stars in the sky, these are the works that moved us the most this year

The first color photo of the Martian surface, taken in 1976 by the Viking 1 probe. To survive on Mars' surface, astronauts will need oxygen, which only exists in trace amounts in the Martian atmosphere.

A Robotic 'A.I. Chemist' Could Make Oxygen on Mars

In a lab on Earth, the machine created a catalyst from Martian materials that can extract oxygen from water, for astronauts to breathe or use as fuel

A photograph of the moon by the Apollo 17 crew on their return trip back to Earth. The new study analyzes material gathered from the lunar surface during the 1972 mission.

The Moon Is 40 Million Years Older Than Thought, Lunar Rock Samples Suggest

A new analysis of crystals from the moon pushes its age back to just 110 million years after the solar system formed

Painted by Leonardo da Vinci sometime between 1503 and 1519, the Mona Lisa is on display at the Louvre.

Scientists Are Still Unraveling the Secrets of the 'Mona Lisa'

A new chemical analysis sheds new light on how Leonardo da Vinci painted the iconic portrait

Could this innovation provide a solution to one of our era’s biggest scourges?

Scientists Have Created Synthetic Sponges That Soak Up Microplastics

Made from starch and gelatin, the biodegradable sponges remove as much as 90 percent of microplastics in tap water and seawater

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