My dream is inventing anti-weapon rays making all kinds of explosives and fire-arms unusable, this way preventing all wars, armed conflicts and acts of terrorism.
These rays would chemically decompose all kinds of explosives by restructuring these death-bringing substances. Portable devices emitting these rays could be located on entrances to airports, stadiums, clubs, super-markets, business-centers ect. Bigger ones could be used by police peacemakers for disarming participants of criminal and military conflicts.
These rays would bring global peace and safety.