Cosmic dust raining down from space has been discovered on rooftops in three major cities.
The tiny particles date back to the birth of the solar system 4.6 billion years ago.
Scientists usually collect cosmic dust in the frozen wastes of Antarctica. Now, for the first time, the space debris has been found hidden in city dirt.
New observations from a NASA spacecraft could help solve a persistent mystery — why the sun’s atmosphere is so much hotter than its surface.
While the sun’s visible surface is about 10,000 degrees Fahrenheit (5,538 degrees Celsius), its upper atmosphere, known as the corona, has temperatures in the millions of degrees.
Nitrogen is one of the essential nutrients of life on Earth, with some organisms, such as the kinds of microbes found within the roots of legume plants, capable of converting nitrogen gas into molecules that other species can use.
With organisms playing such a crucial role in the chemistry of nitrogen on Earth, scientists are examining nitrogen in billion-year-old rocks to decipher its potential as a bio-signature of life on other planets
Despite their obvious physical differences, elephants, lizards and trout all have something in common. They possess elongated, flexible structures at the rear of their bodies that we call tails. But a new study by a University of Pennsylvania paleobiologist reveals that the tails of fish and the tails of tetrapods, or four-limbed animals, are in fact entirely different structures, with different evolutionary histories.
Some dinosaurs may not have been restricted to life on the ground and instead could have launched into the air for quick flights, researchers have found.
As long as the creature’s wing size, weight and muscles met certain criteria, it could likely fly. But these feathery creatures would be no match for today’s birds, which can fly long distances.
Arachnophobes might be shocked to learn that some spiders can fly hundreds of miles across the ocean.
Two million years ago, airborne arachnids colonized remote Pacific islands by ballooning, a technique in which spiders use their silk as a kind of kite that can carry them long distances.
In case you thought we’d figured out life in the oceans even a little bit, a new study published in Nature Communications sets the record straight. For the first time, scientists have found experimental evidence of underwater pollination. There are bees in the sea—or at least creatures that perform the same kind of work.
In a new study, Vanderbilt pharmacologist Jerod Denton, Ph.D., Ohio State entomologist Peter Piermarini, Ph.D., and colleagues report an experimental molecule that inhibits kidney function in mosquitoes and thus might provide a new way to control the deadliest animal on Earth.
Related: Why is a banned pesticide that harms bees actually being used more?
Naturally occurring chemicals found in road salts commonly used to de-ice paved surfaces can alter the sex ratios in nearby frog populations, a phenomenon that could reduce the size and viability of species populations, according to a new study.
Related: A switch to daylight saving time could be lifesaving for koalas, researchers say
The regular use of Caesarean sections is having an impact on human evolution, say scientists.
More mothers now need surgery to deliver a baby due to their narrow pelvis size, according to a study.
Infertile women have been offered new hope after scientists found that a common cancer drug triggers the development of new eggs, an outcome which was previously thought to be impossible.
Children are at substantially increased risk of contracting drug-resistant infections in the months after taking a course of antibiotics, a leading public health official has warned.
Related: A Third of People Given Antibiotics Don’t Need Them
A man with advanced prostate cancer is believed to be cured after doctors ‘shocked’ his tumour to death with huge amounts of testosterone.
Related: Students have made Martin Shkreli’s $750 drug in their chem lab for just $2
A new review finds evidence that the Chinese performed trepanation more than 3,500 years ago
Near the beginning of the 3rd century in ancient China, Han Dynasty leader Cao Cao is said to have called upon a famous doctor named Hua Tuo to treat a headache. Cao Cao had received said headache from a hallucinatory dream that occurred after attacking a sacred tree with his sword, according to the classic 14th century historical novel Romance of the Three Kingdoms.
Seven years ago, a team of divers uncovered a set of ancient fishing traps off of the coast of Sweden. Radiocarbon dating confirmed the traps were built during the Mesolithic, or middle Stone Age period roughly 9,000 years ago. That discovery set in motion a full-scale excavation of the underwater site, which has now been confirmed to be a complete Mesolithic fishing village that some archaeologists have dubbed the “Swedish Atlantis.”
A valuable collection of ancient Egyptian artifacts was returned to its motherland by the US government in a clampdown on criminal gangs smuggling cultural treasures. Among the ancient artifacts was a child-sized sarcophagus uncovered in a Brooklyn garage in 2009, ancient figurines and a limestone carving of an Egyptian temple. The most noticeable item, however, was a 2,800-year-old mummy hand, which had ended up as a Hollywood movie prop, valued at the ridiculous price of $66.
MEXICO CITY—In 1519, Hernán Cortés and his conquistadors arrived in Cholula, one of the largest cities in central Mexico. Roughly 50 miles southeast from modern day Mexico City, its tens of thousands of residents sat in the shadows of the 17,000 foot Popocatépetl volcano. It had a temple featuring more stairs, claimed one Spaniard, than the main pyramid in Tenochtitlan. The Spanish tore it down, and rebuilt Cholula in the same fashion they did across Mexico—replacing “demon-worshipping” sites with Catholic ones.