John D. Rockefeller reached the wealth of kings without using a sword or ruling a nation. How did he did it? Watch this awesome video.
Tagged: Today I Learned
Color blindness is the decreased ability to see color or differences in color. This is what the world looks like through the eyes of someone who’s color blind.
The correct color reproduction in a color photography may suffer some difficulties. Watch this Vox’s document about the evolution of color photography.