PeterM from Berkeley writes " This brief from Science Daily reports the claimed detection of magnetic monopoles an emergent property in a crystalline lattice of Dysprosium Titanate at temperatures between
.6K and 2K. According to the article, these magnetic monopoles interact similarly to electrically charged particles. These are not isolated magnetic monopoles in the same sense that electrons are isolated, mobile charges: instead these monopoles appear at the end of tubes of magnetic flux called "Dirac strings". These were theorized in 1931 by Dirac, but have only just now been observed."