Chemistry

To collect a saliva sample, technicians instruct a person to tilt their head for two to five minutes and spit the accumulated saliva into a sterile tube. The saliva-filled tube is kept on ice and sent to the laboratory to test for the presence of biomarkers for cancer or other diseases.

Is Saliva the Next Frontier in Cancer Detection?

Scientists are finding tumor signals in spit that could be key to developing diagnostic tests for various types of cancer

Australia's 2019 to 2020 wildfires destroyed more than 3,000 homes. New research shows how they also temporarily depleted the ozone layer.

Here's How Wildfires Can Destroy the Ozone Layer

Massive blazes like the ones in Australia three years ago deplete the crucial blanket surrounding our planet through chemical reactions in the atmosphere

Researchers used Barbie dolls to test liquid nitrogen's effectiveness at removing Moon dust simulants from a replica spacesuit. (Left: before spraying; center: after spraying; right: after spot cleaning)

NASA's Moon Dust Problem Might Finally Have a Solution

Researchers sprayed liquid nitrogen at spacesuit-clad Barbie dolls to test their novel idea

Large-scale production of green hydrogen is seen as an alternative to the use of fossil fuels in the coming decades. Latin America is well-positioned to play a large part in this new industry and already has several projects in the works.

Can Green Hydrogen Help Power Latin America?

In anticipation of future demand, several projects are underway in the region to produce this clean energy source

A video screenshot from the U.S. National Transportation Safety Board showing the site of the derailed train.

Dead Fish and Chemical Smells Plague Ohio Community Two Weeks After Train Derailment

Health department officials will establish a clinic for residents experiencing symptoms

Smoke rises from the derailed train cars on Saturday, February 4.

Train Cars Carrying Toxic Chemicals Derail in Ohio

Black smoke rose from the site as officials released and burned chemicals to avert a potentially deadly explosion

Part of the set-up for the experiment: ordinary ice and steel balls placed in a jar

Scientists Have Created a New Type of Ice

It looks like a white powder and has nearly the same density as liquid water

Viking burial mound at Heath Wood being excavated

Vikings Brought Horses and Dogs to England, Study Finds

Cremated bone fragments suggest these animals were companions to the Vikings

An artistic illustration of Egyptian embalmers in the underground embalming workshop at Saqqara

The Surprising Substances Ancient Egyptians Used to Mummify the Dead

An analysis of 2,500-year-old embalming ingredients suggests some of them came from far-off places

People in Chicago fishing on Lake Michigan on December 25, 2021. The new study found particularly high levels of PFAS in fish from the Great Lakes.

Freshwater Fish Contain Harmful 'Forever Chemicals'

Eating one serving of locally caught fish could equate to drinking contaminated water for a month, a new study finds

The Pantheon's dome, the largest unreinforced concrete dome in the world, is still standing despite being nearly 2,000 years old.

'Self-Healing' Concrete May Have Preserved Ancient Roman Structures

The durable material could fill its own cracks, new research suggests

A growing movement is underway to halt chronic disease by protecting brains and bodies from the biological fallout of aging.

Could Getting Rid of Old Cells Help People Live Disease-Free for Longer?

Researchers are investigating medicines that selectively kill decrepit cells to promote healthy aging

Pure Structural Color is made of several extremely thin sheets of non-conductive material. These layers are stacked together and imprinted, or stamped, with a nano-scale pattern of rods with curved ends. This pattern scatters light into colors that are visible from all directions, and different hues can be produced by changing the dimensions of the pattern.

Art Meets Science

This British Zoologist Wants to Reinvent Color

Andrew Parker has produced some of the brightest hues in the world. So, what’s his secret?

The new hydrogel might someday lead to shock-absorbing smartphone cases, as well as better bullet-proof vests and space equipment.

This New Shock-Absorbing Gel Can Withstand Supersonic Impacts

Made from a resilient protein in human cells, the technology could improve body armor, space gear and even cell phone cases

Twelve-year-old Madison Checketts was named one of the 30 finalists in the 2022 Broadcom Masters Competition, the country’s premier science, technology, engineering and math competition for middle school students.

This 12-Year-Old Designed a Water Bottle You Can Eat

After seeing plastic polluting her favorite beaches year after year, Madison Checketts decided it was time to do something about it

This year's list includes Bird Planet, Floridas, I Just Wanna Surf and more.

The Best Books of 2022

The Ten Best Photography Books of 2022

Our favorite titles this year invite viewers to worlds outside their own

Members of the Nobel Committee for Chemistry address a press conference to announce the winners in Stockholm on October 5, 2022. 

Nobel Prize in Chemistry Rewards Research Into Snapping Molecules Together

Carolyn R. Bertozzi, Morten Meldal and K. Barry Sharpless received the award for developing new tools that will improve medicine

An X-ray of the Dancing Horse earthenware sculpture, which dates to 608 to 907 C.E. during China's Tang dynasty

Art Meets Science

Chemistry Reveals the History of an Ancient Dancing Horse Sculpture

The artwork dates to China's Tang dynasty, when horses were a symbol of prosperity

Firefighting foam can contain 'forever chemicals,' which are in many products including food packaging and nonstick cookware. These compounds accumulate in air, soil and water.

Scientists Find a New Technique for Breaking Down 'Forever Chemicals'

The man-made toxins are everywhere and linked to numerous health problems

The metal gallium becomes a liquid at slightly above room temperature, one of its many remarkable properties that researchers are investigating.

This Liquid Metal Could Transform Soft Electronics

Bend it. Stretch it. Use it to conduct electricity. Researchers are exploring a range of applications that harness gallium's unusual properties

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