Tag Archives: thought

Lichens are way younger than scientists thought

Lichens — a combo of fungus and algae — can grow on bare rocks, so scientists thought that lichens were some of the first organisms to make their way onto land from the water, changing the planet’s atmosphere and paving … Continue reading

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Scientists find eternal Nile to be more ancient than previously thought

The Nile’s unchanging path has been a geologic mystery because long-lived rivers usually move over time. Researchers have cracked the case by linking the river’s flow to the movement of rock in the Earth’s deep mantle. In the course of … Continue reading

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New artifacts suggest people arrived in North America earlier than previously thought

Stone tools and other artifacts unearthed from an archeological dig at the Cooper’s Ferry site in western Idaho suggest that people lived in the area 16,000 years ago, more than a thousand years earlier than scientists previously thought. Paleontology News … Continue reading

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Earth’s last magnetic field reversal took far longer than once thought

Every several hundred thousand years or so, Earth’s magnetic field dramatically shifts and reverses its polarity. Geologist found that the most recent field reversal, some 770,000 years ago, took at least 22,000 years to complete. That’s several times longer than … Continue reading

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Maya more warlike than previously thought

What was the role of warfare in Mayan civilization? New evidence from lake sediments around the abandoned city of Witzna indicates that extreme, total warfare was not just an aspect of the late Mayan period, leading to its fall, but … Continue reading

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Human settlements in Amazonia much older than previously thought

Humans settled in southwestern Amazonia and even experimented with agriculture much earlier than previously thought, according to an international team of researchers. Paleontology News — ScienceDaily

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Giant ‘megalodon’ shark extinct earlier than previously thought

‘Megalodon’ — a giant predatory shark that has inspired numerous documentaries, books and blockbuster movies — likely went extinct at least one million years earlier than previously thought, according to new research. This is a substantial adjustment as it means … Continue reading

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Fossils suggest flowers originated 50 million years earlier than thought

The discovery in China of fossil specimens of a flower called Nanjinganthus from the Early Jurassic shakes up widely accepted theories of plant evolution. Paleontology News — ScienceDaily

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Did humans leave Africa earlier than previously thought?

Ancient tools and bones discovered in China by archaeologists suggest early humans left Africa and arrived in Asia earlier than previously thought. Paleontology News — ScienceDaily

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Sweet potatoes didn’t originate in the Americas as previously thought

Sweet potatoes may seem as American as Thanksgiving, but scientists have long debated whether their plant family originated in the Old or New World. New research by a paleobotanist suggests it originated in Asia, and much earlier than previously known. … Continue reading

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