Abstract The Younger Dryas impact hypothesis suggests that multiple extraterrestrial
airbursts or impacts resulted in the Younger Dryas cooling, extensive wildfires, megafaunal …

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 …

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 …

Abstract Firestone et al., 2007, PNAS 104 (41): 16,016–16,021, proposed that a major
cosmic impact, circa 10,835 cal. BCE, triggered the Younger Dryas (YD) climate shift along …

Wolbach et al. published two papers on the Younger Dryas Impact Hypothesis (YDIH)—the
paleoenvironmental effects of a purported cosmic impact at the beginning of the Younger …

In this paper we review the evidence for the Younger Dryas impact hypothesis (YDIH), which
proposes that at∼ 12.9 k cal a BP North America, South America, Europe and the Middle …

The earliest form of the “Younger Dryas (YD) impact hypothesis” was published by Firestone
and Topping [2001] and was substantially extended in a book by Firestone et al.[2006] …

The progress of science has sometimes been unjustifiably delayed by the premature
rejection of a hypothesis for which substantial evidence existed and which later achieved …

New hypotheses with major multidisciplinary implications, such as the Younger Dryas
airburst/impact hypothesis, appropriately face intense testing, and we respect that. However …

At Abu Hureyra, a well-studied archeological site in Syria, the onset boundary of the
Younger Dryas climatic episode~ 12,800 years ago has previously been proposed to …