A substantial body of evidence now supports the Younger Dryas Impact Hypothesis, and no reliable physical or chemical evidence has ever been produced against it. The hypothesis is eminently replicable: cosmic microspherules, for example, have been found at forty Younger Dryas Boundary sites. Platinum group elements have also been found at 40 sites, though not necessarily the same ones. For a general introduction to the Younger Dryas Impact Hypothesis, go here.

In nearly two decades, critics have attempted to sample the boundary only once, and then their errors rendered the results unusable. Lacking negative evidence, they have instead generated a torrent of prose—nearly 132,000 words in the five articles below—language rich in rhetorical ploys and logical fallacies—designed to obscure the central fact that the opponents possess not one dependable scrap of evidence, favorable or unfavorable, from the YDB itself. Their premise is that words alone are enough to invalidate a theory—no evidence required.

This is not to say that we know that the Younger Dryas Impact Hypothesis is correct—it is a hypothesis, after all. But surely any scientist who wishes to investigate it should be encouraged to do so without being attacked as a pseudoscientist, as these pages show has happened repeatedly.