19th century painters may have primed their canvases with beer-brewing leftovers
Brewer’s yeast proteins turned up in several works by two of Denmark’s most famous artists
WHO declares an end to the global COVID-19 public health emergency
It marks a shift to long-term measures to handle the coronavirus
The U.S. COVID-19 public health emergency is ending. What does that mean?
Set to expire May 11, the declaration made tests, vaccines and treatments free to the public
Ultrasound allows a chemotherapy drug to enter the human brain
An early-stage clinical trial shows promise for people with a treatment-resistant brain cancer
Pets and people bonded during the pandemic. But owners were still stressed and lonely
While pets provide companionship, they also add extra responsibilities
Native language might shape musical ability
A global study offers another peek at how language influences cognition
A prehistoric method for tailoring clothes may be written in bone
A punctured bone fragment predates eyed needles in Western Europe by about 15,000 years
The Smithsonian’s ‘Lights Out’ inspires visitors to save the fading night sky
The exhibition explores the harms of light pollution and how to reduce them
Invasive yellow crazy ants create male ‘chimeras’ to reproduce
This unusual reproduction method may help these ants rapidly spread
These transparent fish turn rainbow with white light. Now, we know why
Light gets diffracted by repeated structures in the ghost catfish’s muscles
Two scientists’ trek showed how people of Chaco Canyon may have hauled logs
The researchers literally put their heads together to solve this transportation mystery
Scientists have mapped an insect brain in greater detail than ever before
Charting a larval fruit fly’s nerve cells and their connections took 12 years
The Yamnaya may have been the world’s earliest known horseback riders
Excavated human skeletons indicate that the Yamnaya rode horses around 5,000 years ago
Medicated eye drops may delay nearsightedness in children
The earlier myopia starts, the worse eye health can become later in life
Psychedelics may improve mental health by getting inside nerve cells
What matters is on the inside — of neurons
3-D maps of a protein show how it helps organs filter out toxic substances
Changes in pH make the protein open and close in different environments
How fingerprints form was a mystery — until now
A theory proposed by mathematician Alan Turing in the 1950s helps explain the process
A newfound ‘croakless’ frog may communicate via touch
The animal might use spines on its throat to recognize potential mates instead of calls