Tag Archives: Barrier

Summary: A new study has uncovered why the blood-brain barrier — the brain’s protective shield — becomes leakier with age, potentially triggering memory decline. Researchers identified that proteins N-cadherin and occludin, which help maintain the barrier’s tight junctions, decrease over time. This weakening allows harmful molecules to pass into the brain, disrupting normal function. Because these changes begin in middle …

A study analyzing data from NASA’s Parker Solar Probe has uncovered evidence of a “helicity barrier” in the Sun’s atmosphere. In 2018, NASA launched the Parker Solar Probe on a trajectory that would eventually have it dive into the Sun’s atmosphere (corona), getting seven times closer to our host star than any other spacecraft so far. In June 2025, the …

ATLANTA — Stationed near first base in the familiar black shirt and charcoal-gray slacks, Jen Pawol watched intently as the Atlanta Braves’ Hurston Waldrep fired the first pitch of a doubleheader Saturday. With that, Pawol, 48, made major-league history as the first female umpire to work a regular-season game. The moment completed a journey that took Pawol more than 1,200 …

ATLANTA (AP) — Jen Pawol has made history as the first female umpire to work a regular-season game in the major leagues. Pawol’s much-anticipated debut came as the first base umpire for Saturday’s first game of a split doubleheader between the Atlanta Braves and Miami Marlins. She enjoyed a quiet first inning, watching as Braves right-hander Hurston Waldrep struck out …

Facebook Tweet Email Link New York AP  —  Jen Pawol was in her hotel room in Nashville, Tennessee, when she got the call she had awaited for a decade. She was going to make her major league debut this weekend, becoming the first female umpire in a century and a half of big league baseball. “I was overcome with emotion,” …

The Great Barrier Reef has suffered its biggest annual drop in live coral in two out of three areas monitored by scientists since 1986, a new report has revealed. The Australian Institute of Marine Science (Aims) report is the first to comprehensively document the devastating impacts of the early 2024 mass coral bleaching event – the most widespread and severe …

In the cold darkness deep beneath the waves of the Arctic Ocean, a hidden barrier appears to separate the haves from the have-nots. There, in the midnight zone more than 1,000 meters (3,280 feet) below the surface, the gossamer jellyfish of the subspecies Botrynema brucei ellinorae drifting in the water column have two distinct shapes. Some have hoods topped by …

TUCSON, AZ — A civilian was shot and killed while trying to illegally gain access to Davis-Monthan Air Force Base early Friday morning. United States Air Force officials say a civilian driver failed to stop and identify themselves at the main gate of the base in southern Arizona around 2:30 a.m. The suspect continued to drive erratically and crashed through …

A mysterious oceanic barrier is stopping some deep-sea jellyfish in the Arctic from reaching the Atlantic Ocean, a new study has found. The animals, members of the jellyfish subspecies Botrynema brucei ellinorae, inhabit depths between 3,300 and 6,600 feet (1,000 to 2,000 meters) and can be divided into two groups based on whether individual specimens have a knob on their …

Physicists Break Quantum Barrier With Record-Breaking Qubit Coherence  SciTechDaily Source link