Portside

Some birds use Earth's magnetic field to navigate, but how they do this has been a mystery. Now, researchers have found a protein in bird eyes with a quantum mechanical sensitivity to magnetic fields.

How hard is Sudoku? Searching for the answer leads us to questions about the nature of space and time.

Using over 100 years of archival footage, director Sierra Pettengill explores the history of the largest Confederate monument, Georgia’s Stone Mountain.