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New space junk removal idea: Using ion engine exhaust to knock debris out of the sky

Over 14,000 pieces of junk are clogging up low Earth orbit, but this number could be reduced by a new invention that involves ...

How to clear your Android phone cache (and why you shouldn't wait to do it)

Note: Some Android phones may have a built-in clear all cache option available. Under Settings > Storage > and App Cache, look for a 'Select All' button at the top. What you need: The Chrome app on ...