.PBS NewsHour Here is the transcript JUDY WOODRUFF: Scientists working in Greenland have identified the oldest samples of DNA ever found on Earth. By analyzing this two-million-year-old genetic material, they…
Category: Paleoclimatology
Reminder: Historical Natural Warming Rates Dwarf Modern Climate Change
From 80,000 to 20,000 years ago Greenland warmed by 10-15 Kelvin within a span of “a few decades” 24 times (Kypke and Ditlevsen 2024).
#ShowYourStripes Day – But we have the real one
By Anthony Watts and Charles Rotter According to several sources, #ShowYourStripes is a global campaign to spread awareness about climate change using warming stripes graphics. The iconic blue and red…
Cycles in Earth’s Climate – Part 1: The Trend Setters
The last 7kyr has been a relatively benign period in Earth’s climate with minor excursions in sea level and surface temperature compared with what will be observed over the next…
Newly Discovered 90,000-Year-Old Human Footprints Reveal How Much Higher Sea Levels Used To Be
Evidence along the coasts of North Africa (Morocco) suggests sea levels were “20 m above the present level” about 95,000 years ago (MIS 5c).
With Tree Rings On Their Fingers
But how do we actually know, and how much do we actually know, about historic and prehistoric temperatures? In this Climate Discussion Nexus “Backgrounder” video John Robson examines the uses,…
Comprehensive Russian Temperature Reconstruction Shows Warmer Temperatures 1000 Years Ago!
Result: it was modestly warmer 1000 years ago than it is today.
MWP 1.5C Warmer Than 1900–Says HH Lamb
Generally speaking we are looking at Medieval temperatures between 1.0C and 1.5C higher than in 1900.
The Holocene Climatic Optimum and the “pre-industrial”
By Andy May The “pre-industrial” according to the IPCC in a footnote on page 43 of AR6 WGI is prior to 1750 for radiative forcings and before 1850 for temperature.…
IPCC’s New “Hockey Stick” Temperature Graph
The United Nations’ Intergovernmental Panel on Climate Change (IPCC) published their latest assessment report (AR6) in 2021. In 2023, the Clintel Foundation published a report which criticizes AR6.
PETM Caused by Passing Star?
Could a passing rogue star have caused the PETM? Could other astrophysical phenomena been primary drivers of paleoclimate change?
Hottest In 125,000 Years?
Anybody who claims that this year is the hottest for 125,000 years is fraudulent.
After 25 years, Mann’s Other Nature Trick Unraveled
Mann made it impossible for anyone to carry out routine statistical tests on his famous reconstruction.
Melting ice reveals dozens of 7,000-year-old artifacts in Canada.
Archaeologists surveyed melting ice patches in Canada and uncovered dozens of ancient artifacts spanning 7,000 years. Photos show the “unique” — and perishable — finds.
When Climate Change Really Was an Existential Threat
Guest “Could have used the Extinction Rebellion back then!” by David Middleton, What was going on from 1,000-800 ka that may have nearly wiped out our ancestors? Temperatures plunged, glaciers…
A Brief History of Climate, From Prehistory to The Imaginary Crisis of the 21st Century
Climate history clearly shows that we’re living in a blessed time, and that past civilizations generally prospered during warm periods and declined during cold ones.
Claim: Climate Change Likely Led to Violence in early Andean Populations
Round and round the p-hacking wheel goes. Where it stops, nobody knows.
“How CO2 Starvation & Plate Tectonics Caused the Greatest Mass Extinction, the Permian Great Dying”
The gradual sequestering of CO2 over millions of years gradually dropped CO2 to starvation levels that reduced photosynthesis, causing the “phytoplankton blackout” and Carboniferous Rainforest Collapse, wide spread ecosystem disruptions…
Surprise: Hurricane Activity Reconstructions Show Greater Storm Frequency When Globe Was Cold
warmer periods don’t mean more hurricanes and it appears that colder periods are associated with greater hurricane frequency.
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