Greene offers up a garden hose as a good example of what the fourth dimension looks like. From far away, this garden hose may look one-dimensional to the naked eye. From a distance, we simply can’t ...

We take your questions about life, Earth and the universe to researchers hunting for answers at the frontiers of knowledge. Show more How would a fourth dimensional being appear to humans? "It would ...

A new book offers mathematical puzzles, such as fitting a coin through a hole that seems too small to accommodate it Things to Make and Do in the Fourth Dimension: A Mathematician's Journey through ...