New #battery tech lasts for days, charges in seconds https://t.co/VyPt5uCO92 via @engadget


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How Many Nuclear Weapons Exist, and Who Has Them? Since Russia first invaded Ukraine nearly three weeks ago, the threat of nuclear weapon use has risen. This was made clear on Feb. 27, when Russian President Vladimir Putin announced that his country’s nuclear forces had been placed on “high alert,” the Associated Press reported. Continue Reading . . . https://www.scientificamerican.com/article/how-many-nuclear-weapons-exist-and-who-has-them/
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