Dark matter’s shadowy effect on Earth: Earth’s periodic passage through the galaxy’s disk could initiate a series of events that ultimately lead to geological cataclysms and mass extinctions.’
In my dark matter based theory (I, II, III) the increasing frequency of close asteroid encounters should be also related to global warming episodes. Professor Michael Rampino, a biologist at New York University already presented a theory , that the dark matter disrupts the path of comets and asteroids, which would bombard the Earth, trigger geovolcanism and cause climatic changes.
The truth being said, available data of mass extinctions and volcanic period still support both theories only vaguely(1, 2), which is why scientists are still pushing these hypotheses in popular books instead of serious publications. But we have another indirect indicia of this theory, which is typical for emergent (i.e. hyperdimensional) scenarios: we can find many separated indicia - but none of it works too reliably by itself.
But the research of prof. Rampino is no way unsuccessful. Between others he proposed the presence of a massive impact crater in the Falklands in 1992 after he noticed similarities with the Chicxulub crater in Mexico—the asteroid that created this crater is thought to have played a major role in the extinction of the dinosaurs 66 million years ago. But after a brief report at the Falklands site, very little research was carried out. Now, a team of scientists—including Rampino—have returned to the area to perform an “exhaustive search for additional new geophysical information” that would indicate the presence of an impact crater about 150 km (93.21 miles) in diameter.