On the Map

On the Map

A celebration of the urge to map, from the ancients to GPS, with detours into the male-female map-reading divergence, “X marks the spot,” and the role of maps in war. More »

Bird migration: Key explanation skewered!

Bird migration: Key explanation skewered!

How do homing pigeons find their way on their amazing migrations? Scientists thought iron-bearing nerve cells in the beak can detect Earth’s magnetic field. But those iron granules are in immune cells. How do they do it? More »