A series of publications purport to provide evidence that the Earth was subjected to an
extraterrestrial event or events at∼ 12.9 ka creating an environmental cataclysm and the …

The Younger Dryas (YD) impact hypothesis is a recent theory that suggests that a cometary
or meteoritic body or bodies hit and/or exploded over North America 12,900 years ago …

" Sometime before 15,000 years ago, a band of hunter-gatherers arrived in Northeast Asia.
They continued east, becoming the first people to set foot in the Americas. They soon found …

We present evidence that in~ 1650 BCE (~ 3600 years ago), a cosmic airburst destroyed
Tall el-Hammam, a Middle-Bronze-Age city in the southern Jordan Valley northeast of the …

Airbursts/impacts by a fragmented comet or asteroid have been proposed at the Younger
Dryas onset (12.80±0.15 ka) based on identification of an assemblage of impact-related …

It has been proposed that fragments of an asteroid or comet impacted Earth, deposited silica-
and iron-rich microspherules and other proxies across several continents, and triggered the …

Abstract The Younger Dryas boundary (YDB) cosmic-impact hypothesis is based on
considerable evidence that Earth collided with fragments of a disintegrating≥ 100-km …

Part 1 of this study investigated evidence of biomass burning in global ice records, and here
we continue to test the hypothesis that an impact event at the Younger Dryas boundary …

The Younger Dryas impact hypothesis posits that a cosmic impact across much of the
Northern Hemisphere deposited the Younger Dryas boundary (YDB) layer, containing peak …

Abstract At Abu Hureyra (AH), Syria, the 12,800-year-old Younger Dryas boundary layer
(YDB) contains peak abundances in meltglass, nanodiamonds, microspherules, and …