A huge 11,000-carat ruby has been discovered in Myanmar, state media reported Friday, one of the largest ever found in the country renowned for its precious gemstones.
The molecule cAMP, which plays essential roles in mammalian cells, is less well understood in plants. In a new Science Advances paper, researchers from the Institute of Science and Technology Austria (ISTA) and international collaborators demonstrate that plants use two forms of cAMP in parallel to regulate normal cellular processes and respond to stress, while maintaining crosstalk between them.
Antarctica is being ravaged by a triple-whammy of climate chaos that has melted sea ice to record lows, a new study has revealed. For decades, the frozen wilderness at the bottom of the world defied global warming trends, with ice levels actually growing—until 2015 when it suddenly reversed.
A new study, published in Science Advances, has refined some important details about the moon's largest and oldest impact crater, which stretches more than 1,200 miles (2,000 km) on the far side of the moon. The new details can help guide some of the planning for NASA's upcoming Artemis mission to the moon, which is planned for 2028.
Metamorphosis, that profound transformation enabling certain animals to shift between habitats such as from an aquatic to a terrestrial environment, is generally viewed in terms of its benefits. A team of researchers from the University of Liège has now demonstrated that it also entails a direct and immediate cost for the individuals undergoing it, a cost that varies by sex and could influence long-term evolutionary trade-offs. The study is published in the journal BMC Biology.
Researchers at National Jewish Health have published new findings demonstrating that short-duration spaceflight may not significantly impact lower extremity joint structures, while also identifying a promising, noninvasive tool to monitor astronaut musculoskeletal health on future long-duration missions.
The Pentagon on Friday released a first batch of secret files documenting reported sightings of unidentified flying objects—some dating back to the 1940s—fanning speculation over whether alien life exists.
A spiral galaxy's brilliant heart outshines everything within sight in a new picture from NASA's Webb Space Telescope.
The mysterious origin of an impressive cloud disturbance on Venus has now been revealed by a team including the University of Tokyo. Researchers used numerical models to show that an enormous 6,000-kilometer-wide atmospheric wave front, which circumnavigates the planet for days at a time, is caused by a large "hydraulic jump." This is when a fluid abruptly slows down, changing from shallow and fast to deep and slow.
The four-foot-tall Emperor penguin of Antarctica may be the most iconic member of this unique family of birds, but 17 other species of penguins populate the Southern Hemisphere, many of them confined to isolated islands that make them hard to study.
