资讯
MUNISING, MI -- The layers of sandstone not only give Pictured Rocks National Lakeshore its name and its looks, it also reveals chapters of Michigan’s geological history. Every week, Pictured Rocks ...
"The volcanic rocks have to be at least 4.16 billion years old or older; I would argue that the best age for them is 4.3 billion years old," study co-author Jonathan O'Neil, a professor of ...
Five new structures promoting peace are now on display around Rock Island. The Rock Island Rotary Club added the poles as part of the international Rotary World Peace Pole project. The poles feature ...
The North and South magnetic poles have switched places before - and they’ll do it again. This video investigates what this means for humanity, including the risks of power grid failures and increased ...
Nine times in the past 4,000,000 years or so, the earth’s magnetic field has completely reversed. The North Pole became the South Pole, the South Pole the North. During these reversals, scientists ...
If you ever travel back in time to hang out with Homo sapiens around 41,000 years ago, pack some sunscreen – or better yet, a tailored outfit, and seek out a cave shelter. New research from the ...
A geology program will take place in Waynesboro, Pennsylvania on Thursday, May 1. According to a community announcement, geologist Jeri Jones will present “Your Backyard Geology” at 7 p.m. at the ...
Abstract: Conventional flux reversal machines (FRMs) are limited in torque density due to large pole flux leakage, while the inherently doubly salient structure results in a large torque ripple. In ...
I recently participated in a three-week-long, National Science Foundation-funded research cruise to the Mariana Trench. Our target was an east-to-west transect starting near Guam, over the Challenger ...
The crashes occurred during a weather system that arrived in Rockland at around 6 p.m. on Sunday and brought around an inch of snow. One such incident happened in Airmont near South Monsey Road and ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果