Artist&rsquo;s rendition of multiple <em>Neisseria gonorrhoeae</em>, the bacteria that causes gonorrhea, depicted as two spheres stuck together, each covered in tendrils.
Gonorrhea-Blocking Mutation Also Protects Against Alzheimer’s: Study
Holly Barker | Aug 5, 2022
Research traces the evolution of a gene variant that reduces the risk of Alzheimer’s disease, finding that it originally evolved in response to infectious bacteria.
Close up of ant mandible
Science Snapshot: The Need for Speed
Viviane Callier | Aug 4, 2022
Understanding the biomechanics of the trap-jaw ant could help humans build better, faster robots.
The Scientist Speaks Podcast – Episode 6
The Scientist Creative Services Team | Jun 30, 2020
A Game of Cancer and Evolution
Male common fruit fly (Drosophila Melanogaster) - about 2 mm long - sitting on a blade of grass with green foliage background
The Sex Appeal of Symmetric Songs
Mary Bates | Aug 1, 2022
Female fruit flies assess the physical symmetry of male suitors through the songs they sing, a study claims.
A gametophyte of the brown alga <em>Desmarestia dudresnayi</em> that has both male and female reproductive structures
Meet the Algae That Went from Male/Female to Hermaphroditic
Natalia Mesa | Aug 1, 2022
A study suggests that several species of brown algae may have independently evolved to express both sexes simultaneously, and it’s likely that female algae evolved male traits—not the other way around.
metallic-looking illustration of coronavirus structure
How the Omicron Subvariant BA.5 Became a Master of Disguise—and What It Means for the Current COVID-19 Surge
Suresh V. Kuchipudi, The Conversation | Jul 26, 2022
Several mechanisms contribute to the increased transmissibility of this SARS-CoV-2 variant.
Artist’s rendering of an early mammal called a mammaliamorph
Warm-Bloodedness in Mammals May Have Arisen in Late Triassic
Andy Carstens | Jul 21, 2022
Researchers mapped ear canal shape to body temperature to predict when ancestors of mammals first became endothermic.
Ad&eacute;lie penguin family
Penguins Are Among the World’s Slowest-Evolving Birds: Study
Catherine Offord | Jul 19, 2022
The findings mean that penguins may struggle to adapt under rapid climate change, researchers say.
Dinosaur Fossil (Tyrannosaurus Rex) Found by Archaeologists
Are We in the Midst of a Sixth Mass Extinction?
Katarina Zimmer | Jul 18, 2022
Today’s extinction rates are sky-high. But scientists debate if that’s sufficient evidence to conclude that Earth is undergoing a mass extinction event—or whether that’s even a helpful designation.
Illustration of creatures from today&rsquo;s crisis
Infographic: A Look at the Big Five Mass Extinctions
Katarina Zimmer | Jul 18, 2022
Extinction is a natural part of life on Earth. But occasionally, extinction rates have surged far beyond usual levels, driving mass extinction events that have reshaped the trajectory of life.
Yves Coppens gives a speech at a lectern
Paleontologist and “Lucy” Codiscoverer Yves Coppens Dies at 87
Lisa Winter | Jul 11, 2022
Coppens, alongside Donald Johanson and Maurice Taieb, found a 3.2-million-year-old Australopithecus afarensis fossil in the 1970s.
T. rex-like dinosaur head covered in knobby structures
The Dino That Looked T. Rex-y Long Before T. Rex 
Shawna Williams | Jul 7, 2022
Fossil findings shed light on a little-known group of Cretaceous-era beasts—and indicate that the combination of a large head and diminutive arms was no evolutionary fluke.
A yellow-orange, translucent artist&#39;s rendition of a yunnanozoan, an ancient wormlike fish, that highlights the arches that make up its cartilage skeleton.
This Simple Fish May Have Been One of the First Vertebrates
Dan Robitzski | Jul 7, 2022
A fossil analysis suggests that the yunnanozoan, a wormlike fish that flourished around 520 million years ago, sported structures that were the precursors of the head and jaws of modern vertebrates.
scanning electron microscope image of clawlike microscopic organisms on a smoother surface
Phyla of Tiny Filter Feeders Find a New Spot on the Tree of Life
Alejandra Manjarrez | Jul 6, 2022
A new study using fairly complete genetic datasets of two phyla of small suspension feeders (Ectoprocta and Entoprocta) reopens the debate on the phylogenetic relationships between them and other animals.
Illustration of a DNA virus sneaking genetic material into a host&rsquo;s nucleus
Infographic: Possible Mechanisms of Gene Transfer in Eukaryotes
Christie Wilcox | Jul 5, 2022
Genetic studies have made it clear that eukaryotic horizontal gene transfer can and does happen. Exactly how, though, remains speculative.
red ants coming out of dirt hole
Bull Ant Venom Evolved to Make Bites More Painful to Mammals
Dan Robitzski | Jul 5, 2022
A peptide found in bull ant venom closely resembles a hormone of its primary predator, triggering hypersensitivity and making subsequent bites even more painful than the ones that came before.
Cow image
Slideshow: Examples of Eukaryotic Horizontal Gene Transfer
Christie Wilcox | Jul 5, 2022
Horizontally transferred genes play significant roles in eukaryotic genomes
Landscape illustration
Horizontal Gene Transfer Happens More Often Than Anyone Thought
Christie Wilcox | Jul 5, 2022
DNA passed to and from all kinds of organisms, even across kingdoms, has helped shape the tree of life, to a large and undisputed degree in microbes and also unexpectedly in multicellular fungi, plants, and animals.
Pufferfish underwater in ocean
Pufferfish Don’t Need Functional Stomach, Inflate Instead
Natalia Mesa | Jul 5, 2022
The fish use their stomach to swell up to three times their size. Is this why they can’t use the organ to digest proteins?
Four fossil skulls<br><br>
South African Hominin Fossils Predate Lucy, Analysis Suggests
Andy Carstens | Jun 29, 2022
A newer dating technique using cosmogenic isotopes finds Australopithecus remains from the Sterkfontein caves to be about 1 million years older than previous estimates, potentially changing scientists’ understanding of humanity’s origins.