Double impacts may have caused dinosaur extinction
Fern spikes suggest that a Ukranian impact was just a few thousand years before the spike related to Chicxulub in the Yucatan of Mexico. Learn more here.
Phanerozoic timescale resolution now nearing 100 ky
Detailed graptolite, conodont and carbon isotopic data from three paleocontinents meld to provide great chronostratigraphic control. Learn more here.
Death Star apparently not the cause of periodic extinctions
Recent analyses indicate a remarkable 27 my periodicity in extinctions, so a dark star probably not the cause. Learn more here.
Cave Study Links Climate Change to California Droughts
California experienced lengthy droughts in the past 20,000 years that apparently coincided with the thawing of ice caps in the Arctic. Learn more here.
Last Neanderthals in Europe Died out 37,000 Years Ago
Neanderthals survived south of the Cantabro-Pyrenean mountain chain for several millennia after being replaced or assimilated by anatomically modern humans everywhere else in Europe. Learn more here.
Early Hominid Skeleton Confirms Human-Like Walking Is Ancient
Research on a new specimen, some 400,000 years older than Lucy, reveals that advanced human-like, upright walking occurred much earlier in the evolutionary timeline than previously thought. Learn more here.
Archaeological 'Time Machine' Greatly Improves Accuracy of Early Radiocarbon Dating
A new calibration curve, which extends back 50,000 years, is a major landmark in radiocarbon dating Learn more here.
Key Human Ancestor Found
A new human ancestor dubbed Australopithecus sediba may be the "key transitional species" between the apelike australopithecinesand the first humans. Learn more here.
Scientists to Unearth Ice Age Secrets from Preserved Tree Rings
The rings of preserved kauri trees, hidden in New Zealand's peat bogs, hold the secret to climate fluctuations spanning back to the end of the last Ice Age. Learn more here.
Fossils Show Earliest Animal Trails
Trails found in rocks dating back 565 million years are thought to be the earliest evidence of animal locomotion ever found. Learn more here.
Age of Solar System Needs to Be Recalculated
A trusted equation for calculating the age of the solar system may need rewriting. New measurements show that one of the equations assumptions that certain kinds of uranium always appear in the same relative quantities in meteorites is wrong. Read more here.
Coal vs Fossils
A battle is brewing between a coal company and paleontologists over an Arctic coal mine. Read about Coal versus Fossils