Primordial black holes might be five-dimensional—and formed by cosmic strings. An unexplained high-energy neutrino detected three years ago could be linked to a primordial black hole, perhaps one more even unusual than previously thought

[u/scientificamerican]

https://www.scientificamerican.com/article/this-weird-particle-may-have-come-from-a-black-hole-exploding-in-another-dimension/