Astronomy

Inouye Solar Telescope Discovers Hidden Plasma Vortices on Sun

The highest-resolution image of the Sun’s surface (photosphere) ever captured, taken at 416 nm by the Inouye Solar Telescope; it reveals deformed boundaries of magnetic elements and ultra-fine scale stripes, both associated with Kelvin-Helmholtz instability. Image credit: NSF / NSO / AURA / MPS.

Astronomers using the 4-m Daniel K. Inouye Solar Telescope in Hawaii have detected tiny plasma vortices on the Sun’s surface (photosphere) for the first time, revealing a long-suspected process that could transport energy into the million-degree corona. The highest-resolution image of the Sun’s surface (photosphere) ever captured, taken at 416 nm by the Inouye Solar Telescope; it reveals deformed...

Archaeology

40,000-Year-Old Bird Figurines Found in German Cave

Two bird figurines found at Hohle Fels Cave in Germany. Image credit: Ralf Ehmann / University of Tübingen / Museum of Prehistory and Ice Age Art.

Archaeologists in southwestern Germany have unearthed two miniature bird figurines carved from mammoth ivory, among the smallest and most delicate examples of Ice Age art ever found. Two bird figurines found at Hohle Fels Cave in Germany. Image credit: Ralf Ehmann / University of Tübingen / Museum of Prehistory and Ice Age Art. The two ancient figurines, roughly 2 cm (0.8 inches) long and weighing...

Biology

Dodo Had Surprisingly Keen Sense of Smell and Owl-Like Vision, New Study Reveals

The dodo (Raphus cucullatus) by Frederick William Frohawk, 1905.

New research led by University of Lethbridge scientists offers the most detailed look yet at how the dodo (Raphus cucullatus) — the flightless bird driven to extinction by the 1600s — actually perceived its world, suggesting the ‘stupid bird’ had a far more complex sensory life than its reputation implies. The dodo (Raphus cucullatus) by Frederick William Frohawk, 1905. The dodo and...

Medicine

Scientists Propose New Strategy in Fight against High Blood Pressure

Potassium-rich foods include fruits, vegetables, legumes and dairy. Image credit: Jasmine Lin.

In a perspective paper published in The American Journal of Clinical Nutrition, a team of researchers and health experts calls for a ‘paradigm shift’ in how public health agencies address hypertension, which affects more than 1.28 billion adults worldwide and remains a leading driver of cardiovascular disease. The authors say high blood pressure can be controlled better with a strategy that combines...

Geology

Australia’s North Pole Dome Crater is Earth’s Oldest and Only Known Archean Impact Structure

The North Pole Dome crater: (A) simplified map of the East Pilbara Terrane (EPT, Western Australia), showing Paleoarchean granite domes (pink) and greenstone belts (greens and blues); the North Pole Dome (NPD) lies near the terrane center; (B) geological map of the NPD and the shatter-cone field (yellow star); (C) A quartz (Qtz)-carbonate vein cutting shatter-cone lineation. Image credit: Kirkland et al., doi: 10.1130/G54866.1.

Zircon crystals and impact-altered minerals show that a massive asteroid slammed into what is now the Pilbara region of Western Australia about 3 billion years ago. The North Pole Dome crater: (A) simplified map of the East Pilbara Terrane (EPT, Western Australia), showing Paleoarchean granite domes (pink) and greenstone belts (greens and blues); the North Pole Dome (NPD) lies near the terrane center;...