The whale fossil represents a massive change from the Miocene to today in Kenya’s Turkana Basin, as the fossil of this sea animal was originally found 740 miles inland and 620 meters in elevation – an indication perhaps of a transformed geological and ecological landscape with the open-ended question: Why was the whale there?
Guest “I doubt it” by David Middleton September 16th, 2020Sea ice triggered the Little Ice Age, finds a new studyTakeaways >Sea ice can act as an agent of climate change on a variety of timescales and spatial scales—it’s not just a passive responder to change. >The Little Ice Age may have arisen “out of the…
If the persistence tendency is correctly taken into account, the current warming of Europe appears even more exceptional than previously assumed.”
A 23-million-year-old leaf preserved in a onetime New Zealand lake bed, key to past atmospheric conditions. One can see veins, glands along the teeth, and holes gnawed by insects, with resulting stunted growth and scar tissue.
he extinction of prehistoric megafauna like the woolly mammoth, cave lion, and woolly rhinoceros at the end of the last ice age has often been attributed to the spread of early humans across the globe. Although overhunting led to the demise of some species, a study appearing August 13 in the journal Current Biology found that the extinction of the woolly rhinoceros may have had a different cause: climate change.
I was curious as to why their new Antarctic reconstruction was so dramatically different from PAGES2K only seven years ago – a question that both they and reviewers ought to have thought about. Difference arises mainly from one catastrophic error and 2 implausible new series.
Corals precipitate their calcareous skeletons (calcium carbonate) from seawater. Over thousands of years, vast coral reefs form due to the deposition of this calcium carbonate. During precipitation, corals prefer carbonate groups containing specific variants of oxygen (chemical symbol: O).
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 have discovered evidence for why the earth cooled dramatically 13,000 years ago, dropping temperatures by about 3 degrees Centigrade. The evidence is buried in a…
What kicked off the Earth’s rapid cooling 12,800 years ago?
The greatest time of the Roman Empire coincided with the warmest period of the last 2,000 years in the Mediterranean, according to a study published in the journal Scientific Reports.