Step 1: Draw a square
Using the ruler and black marker, draw a square on your pizza-box lid, leaving a 1-inch border from the edge of the box to each side of the square.

Step 2: Form the flap
With the box cutter or utility knife, cut through three sides of the square you just drew, leaving the line at the rear of the box attached. Fold the flap back so that it stands up when the pizza-box lid is closed.

Step 3: Cover the flap with foil
Cover the underside of the flap with heavy-duty aluminum foil, which will reflect sunlight into the oven. Glue the foil to the flap, smooth out wrinkles, and cut off any excess.

Step 4: Tape plastic sheet
With the scissors, cut two square pieces of clear plastic wrap, each 1 square inch larger than the flap opening. Open the pizza box, and tape one piece of plastic to the underside of the hole so that the plastic covers it.

Step 5: Tape second plastic sheet
Close the lid, and tape the second plastic sheet over the top of the hole, creating a window that helps keep the sun’s heat in the box. Pull both sheets taut as you tape them.

Maintaining an airtight box is crucial in keeping the oven hot.

Step 6: Layer the bottom with foil
Glue or tape a layer of aluminum foil to the inside bottom of your pizza box for insulation.

Step 7: Cover with black paper
Cover the foil layer in the box with sheets of black construction paper and glue them into place. The black base will absorb light and generate more heat inside your oven.

Step 8: Find best angle
Close the lid, and you’re ready to start cooking! On a bright day, place your solar oven outside in direct sunlight. Adjust the foil flap to find the best ray-reflecting angle, and use the ruler, a stick, or a hard-plastic straw to keep the flap propped in place.

If you want to test the reflective angles of your oven before you head outside, shine a laser pointer onto the foil flap to simulate rays of sunlight.

Step 9: Preheat
Preheat your oven by leaving it in direct sunlight for 30 minutes. The box’s temperature will reach about 200 degrees, so while you won’t be able to cook a roast, you can reheat cooked food, melt cheese or chocolate, or—if you have all day—prepare a veggie stew.

Step 10: Cook
Whatever you decide to cook, place it—on its own, or in a heat-safe container—in the center of the oven, so that it is directly under the plastic-wrap window. Close the lid, leaving the flap propped open, and check on your food every 15 to 30 minutes.

Save Fuel

As we all knows after few decade current source of energy  will exhaust. We all have to use that with extreme care and save the energy.

Here are few tips to save fuel and help to protect environment too.

Tips to increase mileage:
Hasty acceleration and sudden use of brake affects the mileage. One should skip these activities to prevent the damages of the system and wastage of gas. To increase your mileage, you should keep constant speed of your Vehicle.

- Avoid unnecessary trips using your Vehicle.
- Keep track on changes of your mileage.
- Try to avoid traffic jams while traveling for your work. In rush hours, there are most chances of wasting mileage.
- Do regular servicing of your Vehicle.
- In traffic jams or in case if you need to stay sometime at any place switches off your engine.
- You also have to take care about the fuel that you used in your Vehicle. It should be of good quality. Impure oil increases fuel consumption.
- You should take care of your Vehicle engine by regularly cleaning it.
- Always check air pressure in the tires. The maintenance of air pressures in tires prevents friction of tires on the road. Therefore, power used for acceleration is reduced and increases mileage of your Vehicle.
- You should choose flat and smooth roads having fewer stops.
- Prefer to go by highway. As the roads are flat, there are fewer chances of acceleration, traffic jams, and rush. It will definitely increase your Vehicle mileage.
- Do not keep your motorcycle idle. If you have set your daily tasks of using your vehicle, do not keep vehicle’s engine cold because it will consume more fuel than warm engine.
- These are some ways to reduce fuel combustion and keep your motorcycle’s mileage perfect.