Spinning centrifuges are used to separate uranium atoms to produce uranium concentrated enough for a nuclear weapon's fission chain reaction. Ali-Reza Sheikh Attar told Iranian TV that another 3,000 ...
Cleaning pros share five surprising ways to use a squeegee on nearly everything in your home and your car. From broken glass ...
Laika was the first animal to orbit Earth. Learn why she was chosen, how she was trained, and how her historic 1957 mission helped shape human space travel.
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