David Knudsen News Today

Two Bass Connections teams are studying the relationship between informal learning and STEM identity formation in partnership with the Museum of Life and Science in Durham.

The St. Helena Striders hope to strengthen a sense of community with monthly walks, starting Saturday at the popular vineyard walk outside the library.

  I have decades of eating delicious mushrooms under my belt, but had no idea how they were grown. How could that be? A recent Friday morning found

Oregon wine pioneer Dick Erath died March 29, following two weeks in the hospital. He was 87. A former engineer, Erath was first inspired to pursue winemaking in 1965 ...

Nancy Dervin The city of St. Helena’s current water restrictions allow residential accounts 65 gallons of water per person a day, which amounts to a reduction of about 30-43%, while commercial users only must cut back by 10%. The approach in Lake County is “All customers in the five water systems are being asked to voluntarily conserve water and reduce usage by 20%” and in Marin County “We are asking all customers, residential and commercial, to save as much wate...

May 13, 2021 Scientists call it a “diffuse auroral eraser.” That’s because this newly named aurora first appears as a bright stripe over a diffuse auroral background. Then, when it disappears, it scrubs out the faint auroral light behind it. Scientists at the University of Iowa said on May 6, 2021, that they’ve given the name diffuse auroral eraser to a new type of aurora not often seen and not well understood. This new and elusive type of aurora – noticed in a 19-year-old video made...

10 MAY 2021 Not all auroras slither through the sky like snakes. Some – called diffuse aurora – are more like an even glow dispersed throughout the sky. Scientists know a fair bit about these diffuse auroras, but an old video from 2002 revealing what seems to be an undocumented auroral phenomenon shows we definitely dont know everything.   "They appear as a section of diffuse aurora that rapidly brightens, then disappears and also erases the background aurora. Then, over the course of sev...

The researchers say the behavior, which they call "diffuse auroral erasers," has never been mentioned in the scientific literature. The findings appear in the Journal of Geophysical Research Space Physics. Auroras occur when charged particles flowing from the sun — called the solar wind — interact with Earths protective magnetic bubble. Some of those particles escape and fall toward our planet, and the energy released during their collisions with gases in Earths atmosphere generate the l...

Loading video... VIDEO: The famed northern and southern lights have been studied for millennia, but they still hold secrets. In a new study, physicists led by the University of Iowa describe a new... view more  Credit: Riley Troyer, University of Iowa For millennia, humans in the high latitudes have been enthralled by auroras--the northern and southern lights. Yet even after all that time, it appears the ethereal, dancing ribbons of light above Earth still hold some secrets. In a new stu...