Use the scissors to cut along the lines. Take the bottom part of the circle and roll it into a cone. Image caption, STEP 2: Unroll it and fold the shape in half vertically. Use a ruler to draw ...

Axons of retinal ganglion cells (red) derived from human pluripotent stem cells bundle together and navigate their environment using growth cones (green), similar to human development of the optic ...

Astronomers believe that the Cone Nebula is an incubator for developing stars. Over time, the densest regions of the nebula will remain, and stars and planets may form there.