I HAVE often been impressed by the scanty attention paid even by original workers in physics to the great principle of similitude. It happens not infrequently that results in the form of “laws” are ...

The familiar phenomenon has puzzled researchers for centuries, but experiments are finally making sense of its unruly behaviours.

March 18, 2026 • Unmanned drones are cheaper than missiles, easy to mass-produce, can travel long distances, and strike with precision. For all these reasons they are reshaping conflicts around the ...

March 17, 2026 • The letter X can be a lot of things: rebellious, mysterious, religious. For this Word of the Week, we examine its origins and many uses. March 13, 2026 • Despite rising tensions ...