New Bartonella bacteria found in Amazon sand flies
A study in Brazil's Amazon rainforest has uncovered a new Bartonella bacteria genotype in sand flies, closely related to the pathogen that causes Carrión's disease.
Stalagmite reveals 13-year drought tied to Maya collapse
A precisely dated stalagmite from a Yucatán cave reveals a series of severe, multi-year droughts that may have contributed to the collapse of the Classic Maya civilization.
The Astonishing Math of the Year 2025
Mathematician Matt Parker explores the unique properties of the year 2025 by transforming a complex mathematical identity into a massive, interactive tiling puzzle.
The Physics Behind Temperature
The actual definition of temperature is insane.
How Two Mummies Rewrote the History of the Green Sahara
Genomic analysis of two 7,000-year-old mummies reveals the inhabitants of the once-lush "Green Sahara" were a genetically isolated population who adopted new technologies through cultural exchange rather than interbreeding.
How Big Does an Asteroid Need to Be to End Humanity?
From city-destroyers to planet-sterilizers, scientists are tracking the asteroids that could one day threaten all life on Earth and developing the technology to prevent them from doing so.
Denisovan DNA helped first Americans adapt, study says
A unique segment of Denisovan DNA, inherited through Neanderthals, was favored by natural selection and may have contributed to the adaptation of the first peoples to life in the Americas.
The Viewpoint: Study Finds Over 99% of Dogs in U.S. Show Moderate to Severe Behavior Issues
According to a major new study, over 99% of U.S. dogs have behavior problems, with aggression and separation anxiety being the most widespread issues.
New study: Changing walk may ease knee arthritis pain
A groundbreaking study reveals that a personalized adjustment to foot angle during walking can significantly reduce knee osteoarthritis pain and potentially slow the progression of the disease.
New dating reveals Greek skull is at least 286,000 years old
Scientists have established a new minimum age of 286,000 years for the mysterious Petralona cranium, clarifying its place in the human evolutionary tree.