What happens when you mix the tiniest molecule on Earth with your water bottle? Maybe… more than you’d expect.
Category: futurism – Page 24
Daniel Kleppner, Physicist Who Brought Precision to GPS, Dies at 92
Daniel Kleppner, an experimental physicist who helped to develop an atomic clock that became an essential part of global positioning systems, or GPS, and who also helped to discover a rare fundamental state of matter predicted by Albert Einstein and his fellow theoretical physicist Satyendra Nath Bose, died on June 16 in Palo Alto, Calif. He was 92.
His wife, Beatrice, confirmed the death. She said he collapsed while visiting their daughter, Sofie Kleppner, and her son, Darwin, who was graduating from high school.
It was in the mid-1950s, while he was doing a fellowship at the University of Cambridge in England, that Dr. Kleppner learned something surprising: It was possible, a tutor told him, to build a clock precise enough to detect the effects of gravity on time. Curious, he went in search of more information and read Norman Ramsey’s 1953 book “Nuclear Moments.”
This startup just hit a big milestone for green steel production
Boston Metal completed its first run of an industrial reactor that uses electricity to make steel.
CDH2 mutation affecting N-cadherin function causes attention-deficit hyperactivity disorder in humans and mice
Molecular mechanisms of attention-deficit hyperactivity disorder (ADHD) are not fully understood. Here the authors demonstrate a mutation in CDH2, encoding N-cadherin, that is associated with ADHD, and in a mouse model, delineate molecular electrophysiological characteristics associated with this mutation.
How plants sense heat during the day
For a decade, scientists have believed that plants sensed temperature mainly through specialized proteins, and mainly at night when the air is cool. New research suggests that during the day, another signal takes over. Sugar, produced in sunlight, helps plants detect heat and decide when to grow.
The study shows that plants rely on multiple heat-sensing systems, and that sugar plays a central and previously unrecognized role in daytime temperature response. The findings, published in Nature Communications, reshape a long-standing view of how plants interact with their environment and could influence future strategies for climate-resilient agriculture.
“Our textbooks say that proteins like phytochrome B and early flowering 3 (ELF3) are the main thermosensors in plants,” the senior author said. “But those models are based on nighttime data. We wanted to know what’s happening during the day, when light and temperature are both high because these are the conditions most plants actually experience.”
Some sharks in the north Atlantic may delay their fall migrations south
Certain migratory species of sharks may remain swimming and feeding in Atlantic Ocean waters in areas of the northeast coast for longer periods of time later into fall before they head toward southern waters. Led by researchers in the School of Marine and Atmospheric Sciences (SoMAS) at Stony Brook University, the study tracked six shark species over five years by way of tagging them and acoustically tracking their movement.
Grok 4 is really smart… Like REALLY SMART
Matthew Berman