psychologists have known that the visual system assumes that light comes from above and have argued that this assumption is ecologically justified because our everyday light source (the sun ...

Though costly to implement, solar energy offers a clean, renewable source of power. 3 min read Solar energy is the technology used to harness the sun's energy and make it useable. As of 2011 ...

SCIENTISTS have achieved a remarkable breakthrough in the pursuit of creating an "artificial sun" that could be the source of unlimited energy. Researchers hope the machine will help harness the ...