Image of a thin-section through an Orthacanthus coprolite with a black box indicating the tooth of an Orthacanthus. Credit: Aodhán Ó Gogáin (Trinity College Dublin)
Scientists have discovered macabre fossil evidence suggesting that 300 million-year-old sharks ate their own young, as...
This is an adult male Galápagos Vermilion Flycatcher on Isabela Island, Galápagos. This species of Vermilion Flycatcher is not extinct, unlike its close relative, the San Cristóbal Island Vermilion Flycatcher.Credit: © Alvaro Jaramillo
Scientists have discovered a new species of...
This image shows a chemosymbiotic worm (Siboglinidae) from Bjørnøyrenna crater field. The siboglinids are dependent on microbes for their nutrition. This successful symbiosis relies on the microbes to convert the methane to organic material that provides energy for the...
The Eastern hoolock gibbon is an IUCN-listed endemic species threatened by the spread of tree plantations in Southeast Asia. A new study identifies hundreds more unlisted species that are also threatened.Credit: Binbin Li
As more of Southeast Asia's natural forests...
A bird species that does a poor job spreading West Nile virus (WNV) but is particularly likely to get mosquito bites may explain why human infections with the disease are relatively uncommon in Atlanta, Georgia -- despite evidence of...
Researchers believe that the latest results showing that dogs' quality of semen has diminished may offer a new piece of the puzzle over the reported significant decline in human semen quality.Credit: © Mathias Appel / Flickr
A study led by...
A snake embryo. Credit: Francisca Leal, University of Florida
For many years, researchers have been trying to understand the origin of the exceptionally long trunks that characterize the body of snakes. This is a mystery in terms of animal development...
Credit: University of Manchester
Researchers from the University of Manchester have teamed up with the New Jersey State Museum and the University of Massachusetts to diagnose a dinosaur from the USA with a horrific medical condition.
The prehistoric patient is a...
When human and chimpanzee infants are dozing, they sometimes show facial movements that resemble smiles. These facial expressions -- called spontaneous smiles -- are considered the evolutionary origin of real smiles and laughter.Credit: Kyoto University Primate Research Institute
When human...
Sunflowers near the UC Davis campus in Yolo County, northern California. Growing sunflowers face dawn in the morning and swing west during the day. Sunflowers that track the sun in this way have more leaf area and biomass. Researchers...
Tupinambis cryptus from Trinidad's Northern Range.Credit: John Murphy; CCAL
The golden tegu lizard, previously thought to be a single species, may actually comprise four distinct clades, including three new cryptic species, according to a study published August 3, 2016 in...
