Earth history, as a scientific topic, encompasses the reconstruction and analysis of the planet’s physical, chemical, and biological evolution from its formation ~4.54 billion years ago to the present. It integrates evidence from stratigraphy, geochronology, paleontology, geochemistry, and tectonics to delineate major intervals (eons, eras, periods, epochs) and events, such as crust formation, supercontinent cycles, ocean–atmosphere evolution, biotic radiations, and mass extinctions. Research in earth history focuses on quantifying rates and magnitudes of processes (e.g., plate motions, climate shifts, biogeochemical cycles) and constraining cause–effect relationships that link Earth’s interior, surface environments, and biosphere through deep time.
How Earth's atmosphere transformed from oxygen-poor to oxygen-rich over a span of about two billion years has been revealed by an international team of researchers.
Earth Sciences
Aug 28, 2025
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155
A new international study published in Earth and Planetary Science Letters reveals that the boundaries between geological epochs and periods, even though randomly distributed, follow a hidden, hierarchical pattern. Co-authored ...
Earth Sciences
Aug 25, 2025
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121
The murky world at the bottom of the oceans is now a little clearer, thanks to a new study that tracks the evolution of marine sediment layers across hundreds of millions of years.
Earth Sciences
Aug 11, 2025
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75
Since the beginning of Earth's history, tiny particles of rock and metal from space have been hitting our planet. On clear nights, we can even see their traces as shooting stars. Trapped in layers of rock, these micrometeorites ...
Astrobiology
Jul 29, 2025
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83
Geology is full of detective stories about the Earth's history, and a new paper in Geology by University of New Mexico Distinguished Professors Emeritus Karl Karlstrom and Laurie Crossey, along with their co‐authors, links ...
Space Exploration
Jul 15, 2025
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89
Ever been late because you misread a clock? Sometimes, the "clocks" geologists use to date events can also be misread. Unraveling Earth's 4.5-billion-year history with rocks is tricky business.
Planetary Sciences
Jul 10, 2025
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61
Researchers from the Nanjing Institute of Geology and Paleontology of the Chinese Academy of Sciences and Columbia University, along with their collaborators, have analyzed sediments from the terrestrial Sangonghe Formation ...
Planetary Sciences
Jul 2, 2025
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40
The Cambrian explosion was an extraordinary phenomenon in the evolution of life on the planet that led to the emergence of many animal phyla and the diversification of species. During this period, some 530 million years ago, ...
Evolution
Jun 26, 2025
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173
Humans have been reshaping the environment for at least 10,000 years. But the Anthropocene is the name given to the specific period of Earth history during which humans have had a global effect on the planet's climate and ...
Earth Sciences
Jun 19, 2025
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58
Deep sea sediments contain treasure troves of information about marine ecosystems and past climate scenarios, yet remain understudied clues into Earth's environmental future, according to researchers.
Earth Sciences
Jun 6, 2025
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88
