power of black and white photography

black and white photos, as the name, dont contain any colours. However, they seem to be stronger and more powerful in convey the emotion.
Some of my favorite blach and white photos :

Michele Clement
Artistic and powerful shot. This photographer was the winner of Black & White Spider Awards 2007 in category “Outstanding Achievement”.

Toni Frissell
Her photos got a strong trend toward realism or surrealism.

Alin Ciortea
His artworks are the examples of modern street photography.

This is 1 of 10 extraordinary bacl and white photos sent to wired.com editorial by the readers