Younger Dryas Myth-Busting: Flash-Frozen Mammoths Edition

Guest “Pleistocene elephant hunting” by David Middleton “The body of this mammoth was found perfectly preserved in the Siberian tundra with food still in its mouth and stomach indicating that…

Younger Dryas Impact Hypothesis Takes Another Self-Inflicted Gunshot Wound

Guest “Really?” by David Middleton H/T to my friend Brian Pratt…Introduction For starters, the author appears to totally fail to grasp the principle of uniformitarianism… Since its introduction in 2007,…

Younger Dryas Impact Hypothesis Takes Another Hit

Guest “whatever” by David Middleton Texas cave sediment upends meteorite explanation for global cooling7 hours agoBaylor University Texas researchers from the University of Houston, Baylor University and Texas A&M University…

Why the recently discovered Hiawatha Crater in Greenland is not the Younger Dryas impact.

Guest “geology lesson” by David Middleton Fire from the SkyResearchers find evidence of a cosmic impact that caused destruction of one of the world’s earliest human settlementsBy Sonia FernandezFriday, March…

The Single Biggest Problem With the Younger Dryas Impact Hypothesis: Uniformitarian Impact Craters, Part Cinq

Guest commentary by David Middleton YDIH = Younger Dryas Impact Hypothesis YDB = Younger Dryas Boundary Last month I shot a big hole in the latest YDIH paper.  This Science…

Poking a Hole in the Latest Younger Dryas Impact Paper (Uniformitarian Impact Craters, Part Trois)

Guest shoot-down by David Middleton Preface In my previous two posts on uniformitarian impact craters, we examined the pitfalls of drawing cartoons on Google Earth images without ever looking at…

A bad day for Younger Dryas comet impact climate theory

Studies refute hypothesis on what caused abrupt climate change thousands of years ago Two new studies in the Journal of Quaternary Science refute the hypothesis that one or more comets/bolides…

Younger Dryas cooling event said to be comet related

From the University of California – Santa Barbara: A cataclysmic event of a certain age Geologist James Kennett and an international team narrow the date of an anomalous cooling event…

Younger Dryas climate event solved via nanodiamonds – it was a planetary impact event

From the University of California at Santa Barbara -By Julie Cohen | Most of North America’s megafauna — mastodons, short-faced bears, giant ground sloths, saber-toothed cats and American camels and…

Rapid climate changes in the younger Dryas, but with a 120 year time lag

From GFZ GeoForschungsZentrum Potsdam, Helmholtz Centre Regional climate changes can be very rapid. A German-British team of geoscientists now reports that such a rapid climate change occurred in different regions…

Where Lies the Younger Dryas Smoking Gun?

Guest Post by Dan Johnston I have been following the proposed collision theory for the onset of the Younger Dryas for a number of years with considerable interest as it…

Widespread evidence of cosmic impact documented – likely cause of the Younger Dryas cool climate episode

From the University of California – Santa Barbara some paleoclimatology without the need to see hockey sticks. Comprehensive analysis of impact spherules supports theory of cosmic impact 12,800 years ago…

Support: comet impact may have triggered the Younger Dryas period

From the University of South Carolina – PNAS: Topper site in middle of comet controversy By Peggy Binette, USC Did a massive comet explode over Canada 12,900 years ago, wiping…

The Intriguing Problem Of The Younger Dryas—What Does It Mean And What Caused It?

This is a follow up posting to Younger Dryas -The Rest of the Story! Guest post by Don J. Easterbrook Dept. of Geology, Western Washington University. The Younger Dryas was…

Younger Dryas -The Rest of the Story!

WUWT readers may recall this recent story: New evidence of Younger Dryas extraterrestrial impact The story below provides much more detail about the Younger Dryas event and the split that has…

New evidence of Younger Dryas extraterrestrial impact

From the University of California – Santa Barbara Study finds new evidence supporting theory of extraterrestrial impact (Santa Barbara, Calif.) –– An 18-member international team of researchers that includes James…

New evidence supporting extraterrestrial impact at the start of the Younger Dryas

There’s a new paper in PNAS worth having a look at. It seems the authors found some very strong evidence for a comet or asteroid impact during the period known…

Evaporation, not outflow, drained ancient Lake Agassiz during the Younger Dryas

From the University of Cincinnati: Long-Lost Lake Offers Clues to Climate Change What caused water levels to drop in an immense yet long-vanished lake? Research by a University of Cincinnati geologist…

Younger Dryas space impact theory: missing the diamonds

DEEP IMPACT?: This 4 centimeter band of dark sediment uncovered at Murray Spring, Ariz., may indicate a cosmic impact or explosion that kicked off a period of global cooling and…

Weekly Climate and Energy News Roundup #479

We find that whole communities suddenly fix their minds upon one object and go mad in its pursuit; that millions of people become simultaneously impressed with one delusion, and run…

Holocene CO2 Variability and Underlying Trends

Guest Post by Renee Hannon Introduction This post compares CO2 data from Antarctic ice cores during the Holocene interglacial period with other publicly available CO2 datasets. Antarctic ice CO2 is…

Sea Levels Near B.C. Canada Were 90 Meters Higher Than Today 14,500 Years Ago

A new study suggests British Columbia (Canada) relative sea levels remained 10 meters higher than they are today until they fell to their present levels in the last ~1800 years.…

Holocene Antarctic CO2 Variability or Lack Of

Guest Post by Renee Hannon Introduction This post examines CO2 ice core measurements from Antarctica during the Holocene Epoch. The key CO2 dataset for paleoclimate studies is the EPICA Dome…

Hiawatha Crater: Bracketing the Age

Guest “Don’t mention the YDIH… (wink, wink, nudge, nudge)” by David Middleton The recent discovery of a large, probably young, impact crater beneath the edge of the Greenland Ice Sheet…