Recent reporting, background, and summaries from the science desk.
A groundbreaking study published in Science has finally revealed why Antarctica developed its vast ice sheet millions of years earlier than the Arctic, solving a long-standing puzzle in climate science. This research explains how such extensive glaciation occurred even when global temperatures were approximately 5°C warmer than today, offering crucial insights into Earth's distinct polar histories.
Pioneering climate scientist Benjamin Santer is fiercely disputing a U.S. government report that, despite citing his own research, reached the opposite conclusion regarding human-caused climate change. His team has now released a new peer-reviewed analysis, asserting that decades of satellite data unequivocally confirm humanity's atmospheric "fingerprint" and aiming to prevent the flawed government report from shaping climate policy.
A groundbreaking study involving over 2,000 older Japanese adults has uncovered a striking link between lower blood vitamin C levels and reduced brain gray matter, alongside weaker connections crucial for memory and attention. While not proving causation, this research significantly bolsters the idea that maintaining adequate vitamin C intake could be a vital dietary strategy for preserving brain health as we age.
The Vera C. Rubin Observatory in Chile has officially launched its ambitious 10-year Legacy Survey of Space and Time (LSST), aiming to create the most comprehensive and dynamic record of the Universe ever. By systematically scanning the entire southern sky every few nights, this groundbreaking project has already discovered over 11,000 new asteroids and promises unprecedented insights into cosmic phenomena.
Scientists have uncovered a groundbreaking experimental drug strategy that forces deadly pancreatic cancer cells to self-destruct and prevents their spread. This novel approach utilizes PCAI compounds to hyperactivate key cellular pathways, offering a significant shift from traditional treatments by actively inducing cancer cell death rather than merely suppressing growth.
New data from NASA's New Horizons spacecraft unveils a fascinating reason behind the solar wind's deceleration at the solar system's boundary. Researchers discovered that interstellar neutral gas particles become ionized, adding mass to the solar wind and causing its gradual slowdown.
Scientists have rediscovered gigantic vertebrae of the extinct megatooth shark, Otodus megalodon, in Denmark, revealing it could have reached an astonishing 24.3 meters (nearly 80 feet) and confirming its status as one of Earth's largest predators. This groundbreaking reanalysis also uncovered basking shark remains within its stomach contents, offering unprecedented insights into Megalodon's diet and opportunistic feeding habits.
Scientists have confirmed the widespread presence of complex carbon-based molecules in Mars' Jezero Crater, a thrilling discovery that significantly advances the search for past or present life on the red planet. Meanwhile, archaeologists have made a puzzling discovery in a South African cave, finding that all Homo naledi skeletons unearthed are female, deepening the mystery surrounding this ancient human relative.
A colossal asteroid, 1997 NC1, described as being as big as three CN Towers stacked, is making its closest approach to Earth on June 27, a rare event not seen since the 17th century. While classified as "Potentially Hazardous," experts assure it poses absolutely no risk, offering a unique chance for sky-gazers to observe it with small telescopes.
China plans to dramatically expand its Tiangong space station from three to six modules, incorporating a co-orbiting Hubble-class space observatory to significantly enhance its scientific capabilities. This ambitious development underscores China's growing ambitions and capabilities in space exploration, positioning it as a key player as the International Space Station nears its operational end.
Expedition 74 astronauts Chris Williams and Jessica Meir are gearing up for a high-stakes spacewalk on June 30 to repair the critical Canadarm2 robotic arm. This nearly seven-hour mission is essential to restore the arm's full functionality after a wrist joint malfunction threatened station operations.
In a significant reversal, the National Science Foundation has halted its controversial plans to dismantle parts of the crucial Ocean Observatories Initiative following widespread criticism from scientists and lawmakers. This vital network, which provides real-time data on ocean temperatures, ecosystems, and climate change, will now see equipment redeployed as the NSF develops a long-term strategy for its future.