For over 70 years, astronomers have been scanning for radio or optical signals from other civilizations in the search for extraterrestrial intelligence...
Using state-of-the-art analytical techniques, researchers have detected diverse suites of nucleobases — including canonical base pairs (e.g., adenine-uracil,...
The nature of Earth’s earliest crust and crustal processes remains enigmatic due to the almost complete lack of a rock record older than 4 billion years...
Cubic zirconia from the 28-km- (17.4-mile) wide Mistastin Lake crater in Canada required >2,370 degrees Celsius melt, which is hottest recorded on Earth’s...
In 2017, paleontologists found 3.75- to 4.28-billion-year-old microscopic filaments and tubes, which appeared to have been made by iron-loving bacteria,...
Biological structures frequently exhibit modularity and symmetry, but the origin of such trends is not well understood. It can be tempting to assume —...
An analysis of a photographic dataset for more than 4,500 species of passerine birds shows that male and female birds of tropical passerine species are...
Each year, about 2 kg of helium-3, a rare isotope of helium gas, escapes from Earth’s interior, mostly along the mid-ocean ridge system. Helium-3 is...
A small near-Earth asteroid called 2022 EB5 disintegrated over the Norwegian Sea just two hours after its discovery on March 11, 2022.
An artist’s impression...
Seismic observations have recently revealed two seismic anomalies in Earth’s lowermost mantle, one beneath Africa and the other beneath the Pacific Ocean,...
Conventionally, intelligence is seen as a property of individuals. However, it is also known to be a property of collectives. Examples include collective-decision-making...
According to new research from the Australian National University and the Queensland University of Technology, the supermountains formed twice in Earth’s...
Archaeologists have found meteorites, microspherules, iridium and platinum anomalies, and burned charcoal-rich habitation surfaces at 11 archaeological...
2020 XL5 will be an Earth Trojan asteroid for at least 4,000 years, according to a paper published in the journal Nature Communications.
This composite...
Tree diversity is fundamental for forest ecosystem stability and services. However, because of limited available data, estimates of tree diversity at large...
During solar storms, the Sun expels large amounts of energetic particles that can react with the atmosphere of Earth and produce cosmogenic isotopes such...
Using a novel crater detection algorithm, which automatically counts the visible impact craters from a high-resolution image, a team of planetary researchers...
Astronomers have analyzed archival images from NSF’s Zwicky Transient Facility (ZTF), which provides an ideal setup to study the effects of low-Earth-orbit...
