63 results found displaying 13-15
    
mtd28student
 New Zealand
Clean Air Printer Friendly Version
This idea sort of falls under environment, but I bet more people would look at it here, so here she goes.
Busses travel in most cities for at least 15 hours of the day. During that time the bus may cover up to 300km. A filter placed on the roof of the bus would see a fair amount of air in one of those days. For example, if the dimensions of the filter were 2.5 x .5 meters then in the course of the day one bus could filter approximately 250,000 cubic meters of air. Filters could be washed and pellets made of the dirt collected. These pellets could be disposed of properly. This would make the cities a cleaner place. The governments could subsidies the bus companies and every one would be happy.
Reward: Recognition 

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kiwibacon
 New Zealand
Anyone hate land mines? Printer Friendly Version
Like anyone I hate the idea of land mines that are left behind after a conflict to claim lives and limbs. However, they will continue to be manufactured to fill the military's demand.
My idea is that an internal device should be designed to be easily incorporated (at little cost), to allow a mine to be set to be active for a limited time period (say two years) after which it would be inctive and largely harmless. There are a number of ways that this could be achieved:
Incorporate a switch that will degrade at a certain predictable rate when exposed to the elements. After a certain period the circuit will break and will no longer carry the charge to the detonator charge.
Another way is to have a biodegradeable explosive charge that will degrade over a fixed period. This is not as strange as it sounds as BAE systems is focussing on environmentally friendly weapons. As far as I know this application has not been proposed to date. Achievement of this latter idea will be very lucrative while benefitting thousands of collateral victims of continuing or extinguished conflicts. This idea needs a champion to make it happen.
Reward: Letting me know that my idea was put into practice. 

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curcro
 New Zealand
Space For Solar Power Printer Friendly Version
One of the biggest issues with solar power is finding the land area for it, without wasting usable land. My idea is to use the roads, by building tall platforms that run the length of the road. This would allows dual use of the same space, particularly in the country. In addition, the roads would be safer as it would provide a partial cover to rain, thus preventing some hydroplaning. They already do it in some places with byways, why not solar panels. Add you don't have to destroy usable land or park land to do it.
Reward: Credit and some sort of appreciation. :) 

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