To make a simple DIY solar water heater, you need black paint, copper pipes or tubes, a glass sheet, insulation material, and a tank. Black paint is ideal for maximizing heat absorption.

There are a lot of DIY solar water heater designs out there, but you'd be hard-pressed to find one simpler, cheaper, and ...

Nevertheless, this impressive DIY project illustrates how solar energy can be harnessed in an environmentally friendly and efficient way using simple means.