Sustainability

If me and my three best friends were stranded on a deserted island and the only supplies on hand are a knife, a blanket, some matches, a water filter, a 1st aid kit, a compass, and a mirror. how will i survive?

Well, using the knife i could use it to sharpen some sticks and create a punji pit for other animals.Next, I can find a natural stream of water and set up the filter so that the flow flows through it and into a cup i carved out of wood with my knife. To sustain my fire, i can build a camp fire away from the elements and stock it up on wood so that it could burn for a long time, then i can measure how long a piece of wood burns, say a log burns an hour, then i find eight pieces of wood bigger or as big to burn over night so that it is still burning in the morn. I could use the blanket to sleep with. Finally I could fashion a spear and fish.

Say my family makes 2000$ a month, now say I pay 1000$ rent, electricity 100$, natural gas 75$, water 100$, car insurance 75$, clothing 50$ toiletries 50$, how can I make it a month for food & gasoline on the remaining amount? If I have to remain on the remaining amount, I could start my own vegetable and fruit garden, while going to places like a farmers market to buy fruit and veggies cheap until my garden grows, I could also only buy things things at the store that is on sale at the time.

In the USA, 50% of electricity comes from burning, and our fuel comes from petroleum and both will run out soon. Our nation can switch to entirely solar, wind, tidal, hydro power (such as dams), and geothermal to ensure clean energy. We could get wind and solar energy esily, but geothermal energy can only be harvested at faults and vents, while hydroelectric energy can only be harvested from building dams that will restrict the migration of fish like salmon and other fish, finally tidal energy is much like dams where the tide will be able to spin turbines that generat electricity. As for fuel, we can always switch to bioproducts like vewgtable oil for gas...it really does work!