Sawfish fossils suggest teeth likely evolved from body scales in ancient fish
Scientists have long debated the origins of teeth. Did they evolve from body scales that migrated into the mouths of ancient vertebrates and became adapted for eating—an idea known as the "outside-in" hypothesis? Or did they evolve independent of s.....»»
Researchers challenge longstanding theories in cellular reprogramming
A team led by researchers at the University of Toronto has discovered that a group of cells located in the skin and other areas of the body, called neural crest stem cells, are the source of reprogrammed neurons found by other researchers......»»
A new dental scam is to pull healthy teeth to sell you expensive fake ones
It turns out you may not have needed those implants after all. Becky Carroll was missing a few teeth, others were stained or crooked. Ashamed, she smiled with lips pressed closed......»»
The mortality rate of bats at modern-day swimming pools is comparable to that at Messel 47 million years ago
More than 500 bat fossils have been discovered at the Messel Pit UNESCO World Heritage Site over 42 years. A new study, published today in the journal Palaeobiodiversity and Palaeoenvironments, investigates whether the high number of fossils is due t.....»»
Scientists witness stunning, unprecedented carnage in the ocean
Scientists observed the largest-ever predatory event in the ocean when a mass of Atlantic cod consumed over 10 million capelin in the Barents Sea off of Norway. On an unassuming morning off the Norwegian coast, millions of small fish called cap.....»»
The Samsung Galaxy S25 lineup just got a lot more interesting
The Samsung Galaxy S25 is set to release in just a few months, but a recent leak suggest there might be a fourth, slim model added to the lineup......»»
Single-molecule tracking technology streamlines drug discovery
New drug discovery is a critical step for improving patients' lives. First, researchers must identify molecules in the body's cells that help drive disease, as these are potential targets for new drugs. The next step is to screen candidate drugs that.....»»
Experiments demonstrate precise delivery of nanoparticles to lung via caveolae pumping system
In recent years, bio-medical engineers have been developing promising techniques that could help diagnose diseases or precisely target specific regions inside the human body. Among these promising therapeutic strategies are methods that rely on the u.....»»
Ancient Mayan city discovered via page 16 of Google search results
Who ever goes beyond page one of Google search results? Well, Luke Auld-Thomas did, and it led to the discovery of a lost city......»»
Atlas of the Human Planet: 50 years of population growth and urbanization trends uncovered
The new Atlas of the Human Planet reveals 50 years of global population growth and urbanization trends, providing insights into how cities and rural areas have evolved. This data offers vital tools for addressing future climate, social, and economic.....»»
Astrophysics study explores turbulence in molecular clouds
On an airplane, motions of the air on both small and large scales contribute to turbulence, which may result in a bumpy flight. Turbulence on a much larger scale is important to how stars form in giant molecular clouds that permeate the Milky Way......»»
Person accidentally poisoned 46 coworkers with toxin-loaded homemade lunch
Testing found S. aureus in a homemade noodle dish caused the illnesses. For some, microwaving fish in the employee lunch room is the ultimate work faux pas. But for one (likely mo.....»»
We now know the secret to why Roman concrete lasts thousands of years
Ancient Rome was full of master builders and engineers. The fruits of their labors can still be seen in the aqueducts they built—which still function … The post We now know the secret to why Roman concrete lasts thousands of years appeared fi.....»»
A remarkable fossil assemblage gets a new interpretation
A team of paleontologists recently discovered that an ancient seascape known for its diverse assemblage of exceptionally preserved fossils represents an unexpected oceanic setting, placing the fossils in an environmental context that is dramatically.....»»
Global fleet of undersea robots reveals the phytoplankton hidden beneath the ocean"s surface
Phytoplankton—microscopic plant-like organisms—are the foundation of the marine food web, sustaining everything from tiny fish to multi-ton whales while also playing a critical role in removing carbon dioxide from the atmosphere......»»
Study finds comb jellies can reverse age
A new article published in Proceedings of the National Academy of Sciences reveals the unprecedented ability for reverse development in a ctenophore, also called comb jelly. The findings suggest that life cycle plasticity in animals might be more com.....»»
Australian courts use "body language" to judge witness credibility
Nonverbal behavior in the courtroom can significantly influence how judges assess the credibility of witnesses in their rulings. But is reliance on "body language" based on sound science?.....»»
This ancient tadpole fossil is the oldest ever discovered
Scientists have discovered the oldest-known fossil of a giant tadpole that wriggled around over 160 million years ago......»»
Archaeologists suggest the "urban revolution" was slow in Bronze Age Arabia
Settlements in northern Arabia were in a transitional stage of urbanization during the third to second millennium BCE, according to a study published October 30, 2024 in the open-access journal PLOS ONE by Guillaume Charloux of the French National Ce.....»»
Bones from shipwreck suggest right- or left-handedness could affect how clavicle chemistry changes with age
A new study of human skeletal remains from the wreck of the 16th century English warship "Mary Rose" suggests that whether a person is right- versus left-handed may influence how their clavicle bone chemistry changes as they age. Dr. Sheona Shankland.....»»
How life began on Earth: Model suggests ancient Earth had organic-rich atmosphere
The key to unlocking the secrets of distant planets starts right here on Earth. Researchers at Tohoku University, the University of Tokyo, and Hokkaido University have developed a model that considers various atmospheric chemical reactions to estimat.....»»