The last link in the article is to a paper called "Humanly Traversable Wormholes". Here is an excerpt from its conclusion "In fact, it allows for solutions wher

The last link in the article is to a paper called "Humanly Traversable Wormholes". Here is an excerpt from its conclusion "In fact, it allows for solutions where the wormholes are big enough that a person could traverse them and survive. From the outside they resemble intermediate mass charged black holes. Their big size comes from demanding that a human traveller can survive the tidal forces.", from [PDF] https://journals.aps.org/prd/pdf/10.1103/PhysRevD.103.066007 https://journals.aps.org/prd/pdf/10.1103/PhysRevD.103.066007