I think it's fair to say we don't know what causes gravity other than to put forth that gravity is a consequence of mass.<br /><br />The Higgs boson is used to describe the hows and whys particles have mass in the first place, but, unfortunately, it has yet to be discovered, much less proven.<br /><br />As for creating it, I'm not sure what you are proposing.<br /><br /><br /> <div class="Discussion_UserSignature"> <div> </div><br /><div><span style="color:#0000ff" class="Apple-style-span">"If something's hard to do, then it's not worth doing." - Homer Simpson</span></div> </div>