1
Plate tectonics is the unifying theory of Earth science and explains many of the major features of how our planet operates. It accounts for Earth's history including the distribution of life and past climate change.
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2
CO2 emitted by volcanoes into the atmosphere is removed by a series of chemical reactions related to rock weathering.
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3
Earth's climate is a complex system controlled by many factors. This Click and Learn will examine the two most important factors: solar radiation and the composition of Earth's atmosphere.
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4
An early continental drift model proposed that mantle convection can produce continental movement and new plate formation.
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5
Sunlight that warms Earth is re-emitted as infrared radiation, which is absorbed by greenhouse gases and causes further warming.
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6
Arctic sea ice melted on an unprecedented scale in 2012, opening up the fabled Northwest and Northeast passages.
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7
The breakup of a supercontinent into several smaller continents explains the distribution of fossil and geologic evidence.
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8
Has Earth changed over deep time? How did Earth shape life and life shape Earth? What does Earth's climate in the distant past tell us about the future? Andrew H. Knoll of Harvard University, Naomi Oreskes of the University of California, San Diego, and Daniel P. Schrag of Harvard University guide...
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9
Reconstructing past continental plate movements reveals the island of Spitsbergen was tropical 500 million years ago.
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10
The disappearance of the dinosaurs at the end of the Cretaceous period posed one of the greatest, long-standing scientific mysteries. This three-act film tells the story of the extraordinary detective work that solved it. Shot on location in Italy, Spain, Texas, Colorado, and North Dakota, the film...
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11
Today, oxygen, or O2, makes up about 21% of Earth's atmosphere, but for most of our planet's long history, O2 levels in the atmosphere and dissolved in the ocean were much less than they are today. In this Click and Learn, you will learn the complex biological and geological factors that have...
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12
Fossilized dung beetle balls are part of a comprehensive fossil collection project to reconstruct the habitat of Ardipithecus ramidus.
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