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Australopithecus sediba Dismissed as Human Ancestor
May 9, 2019
Two paleoanthropologists writing in Science explain why the mysterious A. sediba is unlikely to be related to the genus Homo.
350,000-Year-Old Skull Looks Shockingly Like Modern Human
July 11, 2018
It's too old, but too modern: a skull unearthed in Ethiopia in 2017 has evolutionary paleontologists rewriting textbooks – again.
Concretions Can Form Rapidly
May 8, 2018
The spherical inclusions inside geological layers do not take millions of years to form, Japanese scientists say. Concretions are eye-catching. Varying in size from peas to cannonballs, the almost perfectly spherical balls that erode out of geological layers seem almost too perfect to be natural. Science Daily indicates that scientists, not only laypersons, are mystified […]
Homo naledi Is Young
May 10, 2017
The media are abuzz with disappointment that this cache of bones in South Africa is too young to be a missing link. Homo naledi is one of the most astonishing “hominin” fossil finds in recent years, on par with the “hobbits” (Homo floresiensis) of Indonesia. Debates have gone wild since Lee Berger announced hundreds of […]
"Extraordinary" Radiocarbon Anomaly Found in Tree Rings
January 19, 2017
A tree ring sample from a bristlecone pine reveals something weird happened to the sun around 5480 BC.
"Fundamental Assumption" in Zircon Dating Called into Question
February 15, 2016
A commonly-used dating method has been threatened by new findings that undermine assumptions.
Denisovan Genome Reveals Interbreeding With Modern Humans
September 1, 2012
With the publishing of the Denisovan genome, the genetic profile of interfertile humans has widened considerably.
Planetary Radiometric Dates 1/3 Younger
May 1, 2012
The half-lives of radioactive isotopes may not be as well-known as thought. One decay rate frequently used to date solar system objects had to be adjusted down to 66% of its former assumed value, impacting theories of planet formation.