Science is fun! Especially when it is used to create a homemade cannon that looks so cool when it fires. This guy connected a self-igniting propane torch to some tubes and then colored the flame so ...

There's something about mad scientist types making sci-fi style weapons in their backyards. It's the stuff anyone with a passing interest in science and tech dreams of doing at the weekend. The ...

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BestReviews is reader-supported and may earn an affiliate commission. Details. This is an archived article and the information in the article may be outdated. Please look at the time stamp on the ...