The least powerful category of bitcoin mining hardware is your computer itself. (coindesk.com)
Harvey, Irma, and Maria all made landfall as powerful Category 4 storms with winds exceeding 130 mph. (vox.com)
The National Weather Service assigned the twister a preliminary ranking of EF4 on the Enhanced Fujita Scale, meaning the second most powerful category of tornado with winds up to 200 mph. (scientificamerican.com)