News
- Archaeology
Ancient Scythians had cultural roots in Siberia
A possible sacrificial ritual from around 2,800 years ago suggests mounted herders from Siberia shaped a Eurasian culture thousands of kilometers away.
- Artificial Intelligence
The discovery of tools key to machine learning wins the 2024 physics Nobel
John Hopfield and Geoffrey Hinton used tools from physics to develop data analysis methods that underlie machine learning.
- Neuroscience
Semaglutide saps mice’s motivation to run
Mice given semaglutide, the key ingredient in drugs like Ozempic and Wegovy, lost weight, but they also voluntarily ran less on a wheel.
- Health & Medicine
Blood pressure may read falsely high if the arm isn’t positioned properly
A clinical trial found blood pressure readings were higher with the arm on the lap or along the side, compared with supported at heart height.
- Animals
These sea creatures can fuse their bodies
A species of comb jelly can fuse its body with another jelly after injury. Some of the pair’s body functions then synchronize.
- Genetics
The discovery of microRNA wins the 2024 physiology Nobel Prize
Victor Ambros and Gary Ruvkun found a new principle of gene regulation essential for all multicellular organisms.
- Oceans
A transatlantic flight may turn Saharan dust into a key ocean nutrient
Over time, atmospheric chemical reactions can make iron in dust from the Sahara easier for organisms to take in, helping to create biodiversity hot spots.
- Animals
Some tadpoles don’t poop for weeks. That keeps their pools clean
Eiffinger’s tree frog babies store their solid waste in an intestinal pouch, releasing less ammonia into their watery cribs than other frog species.
- Astronomy
Barnard’s star has at least one planet orbiting it after all
After decades of searching, a telltale gravitational wobble points to an exoplanet orbiting the nearby red dwarf every 3.15 days.
- Health & Medicine
An mRNA vaccine protected mice against deadly intestinal C. difficile bacteria
An mRNA vaccine that targets several aspects of C. difficile’s ability to cause severe disease prevented major symptoms and death in mice.
- Health & Medicine
Brain-controlled bionic limbs are inching closer to reality
Bionics engineers typically view biology as something to be worked around. “Anatomics” engineers the body to be part of the system.
- Neuroscience
Scientists have traced all 54.5 million connections in a fruit fly’s brain
By tracing every single connection between nerve cells in a single fruit fly’s brain, scientists have created the “connectome,” a tool that could help reveal how brains work.
