It looks like a simple math sum but has left people scratching their heads... can you solve it?

It looks simple at first, but this math problem has the internet stumped. Don't be fooled - it demands more brainpower than ...

Cosmic ray puzzle resolved as scientists link 'knee' formation to black holes

Milestone results released by the Large High Altitude Air Shower Observatory (LHAASO) on November 16 have solved a decades-old mystery about the cosmic ray energy spectrum—which shows a sharp decrease ...