Scientists have long known that light can sometimes appear to exit a material before entering it—an effect dismissed as an illusion caused by how waves are distorted by matter.

A group of Brazilian researchers has presented an innovative proposal to resolve a decades-old debate among theoretical physicists: How many fundamental constants are needed to describe the observable universe? Here, the term "fundamental constants" refers to the basic standards needed to measure everything.

One of the biggest mysteries in science—dark energy—doesn't actually exist, according to researchers looking to solve the riddle of how the universe is expanding.

A pair of geologists with the U.S. Geological Survey, Denver, has created a model that shows Earth's subsurface may hold up to 5.6 × 106 million metric tons of natural hydrogen. In their study, published in the journal Science Advances, Geoffrey Ellis and Sarah Gelman added factors to a geological model to produce estimates regarding the likely amount of hydrogen in parts of the Earth.

Northwestern University engineers are the first to successfully demonstrate quantum teleportation over a fiberoptic cable already carrying internet traffic.

An international research team led by the Institut Català de Paleontologia Miquel Crusafont (ICP) and the Museu Balear de Ciències Naturals (MUCBO | MBCN) have described a fossil animal that lived between 270 and 280 million years ago in present-day Mallorca.

Spanning more than 1,000 kilometers in length and up to 5,600 meters in height, the mountain ranges of the Caucasus stretch between the Black and Caspian Seas. What appears to be a huge natural barrier was actually an important contact and exchange zone between the highlands of West Asia and the Southeast European steppes for thousands of years. Despite its importance, archaeological data from the Caucasus and neighboring regions remains fragmentary.

Indian astronomers report the detection of a new grand-design galaxy with the James Webb Space Telescope (JWST). The newfound galaxy, which received designation A2744-GDSp-z4, is relatively large and massive. The finding was detailed in a paper published Dec. 6 on the pre-print server arXiv.

Researchers from Aarhus University (AU) have developed a new technology that uses microorganisms to convert the CO2 in flue gas directly for new purposes—for example fuels or substances for the chemicals industry.

Researchers recently made a groundbreaking discovery on the nanoscale: a new type of quasiparticle found in all magnetic materials, no matter their strength or temperature. These new properties shake up what researchers previously knew about magnetism, showing it's not as static as once believed.