None of the shapes are 3D; you'll add that look in a later step. The cursor turns into a plus sign. Drag the cursor on the Word page to form the shape.

Proteins are the building blocks of life. They start as strings of amino acids that fold into three-dimensional shapes. Those shapes determine how a protein will function. For more than 50 years, that ...

Researchers have created microscale robots less than 1 millimeter in size that are printed as a 2D hexagonal 'metasheet' but, with a jolt of electricity, morph into preprogrammed 3D shapes and crawl.