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Physicists have finally figured out why these massive ice discs start spinning on their own

New physics from a 100-year-old mystery.

New physics doesn’t always come from the recesses of space or the bowels of the Large Hadron Collider. Sometimes, you just need some cameras, a nickel bead, a magnet, and Petri dish popsicles.

Every once in a while, someone notices a big disc of ice eerily spinning in a river. These discs can be anywhere from 1 to 200 metres across, and almost everything about them has mystified physicists and environmental scientists for over a century. While it’s thought that this rare natural phenomenon is likely was caused by cold, dense air coming in contact with an eddy in a river, no one’s been able to definitively explain why these giant discs continue to rotate as they melt. Until now.

The most common explanation for the spinning ice discs says that as the discs float along in a river, they’re spun around by eddies - little spinning currents that form when water flows over rocks or into an enclosed space. And while this is this is probably part of what’s happening, it can’t be the whole story.

Yes let’s replace and travel the world.

Source: www.myheartwasmadetotravel.com 💗✈️🌎

Earth is everyone’s hometown. Happy Earth Day!

Don’t wait for extraordinary circumstance to do good; try to use ordinary situations.

Charles Francis Richter (via fyp-science)

The disparity in online access is also apparent in what has been called the “homework gap,” or the gap between school-age children who have access to high-speed internet at home and those who don’t. Some 5 million school-age children do not have a broadband internet connection at home, with low-income households accounting for a disproportionate share.

Digital divide persists even as lower-income Americans make gains in tech adoption, Monica Anderson, Pew Research Center

(via libraryadvocates)

It breaks my heart that there are children struggling to keep up at school because they don’t have the same access to the Internet as their peers. If you also want to help, please consider donating or volunteering: http://www.networkforgood.org/topics/education/digitaldivide/

People with passion can change the world for the better.

Steve Jobs (via forbes)

reach for the stars

“The sky is not the limit, it’s just the beginning”

Cool video, but I’d rather save my pennies for a self-driving car.

Arca Space’s ArcaBoard now costs $14,900, but still only flies for six minutes.