Bring Your Own,Durable Not Disposable,Live Efficiently,Reduce Reuse Refill Why Can’t All Those Disposable Ballpoint Pens that Are Overrunning My Office be Refillable? Disposable Pens Are No Small Problem According to the EPA, Americans throw away1.6 billiondisposable pensevery year. Add the rest ...
Technically, helium -would- make it a tiny bit lighter. For a gas, helium has great thermal transfer properties(useful for spreading the motor heat throughout the frame), but it is very difficult to contain. It’s used for super critical leak detection. How about a hydrogen/air fuel cell...