Some of us may remember in high school science class viewing a busy, single-celled Paramecium as it moves through a watery medium. They move using numerous...

Covering a flat surface with some pattern of geometric shapes with no overlaps or gaps is called tiling. Tiling shows up in many places, from the tiles...

The puzzle persists after all these years. On the one hand, biochemists perform decay rate studies that show biochemicals cannot last a million years...