A new type of "ink" makes it possible to 3D print electrochemically switchable, conducting polymers using a light-based ...
The human body and sharp objects don’t get along very well, especially when they are being wielded with ill-intent. Since ...
Click to open image viewer. CC0 Usage Conditions ApplyClick for more information. Harriet Powers, an African American farm woman of Clarke County, Georgia, made this quilt in about 1886. She exhibited ...