1
Published in 2013
What did Earth's continents and oceans look like 250 million years ago, or even 1 billion years ago? What do we know about the climate back when our planet formed? EarthViewer is like a time machine for exploring Earth's deep history. Based on the latest scientific research, it lets you scroll...
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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2
Sunlight that warms Earth is re-emitted as infrared radiation, which is absorbed by greenhouse gases and causes further warming.
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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3
Arctic sea ice melted on an unprecedented scale in 2012, opening up the fabled Northwest and Northeast passages.
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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4
Current consumption of fossil fuel releases more than 25 billion tons of CO2 into the atmosphere every year. If current trends continue, there will be a tripling of atmospheric CO2 by the end of the century—levels not seen for more than 40 million years. By measuring our carbon footprint, we can...
Grade Level   4 5 6 7 8 9 10 11 12
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5
Published in 2016
At least five times in Earth's history, environmental catasprophes have caused a majority of species to go extinct. These so called mass extinctions are potent examples of hwat can happen in the face of rapid environmental change. This book showcases the work of HHMI BioInteractive, including...
Grade Level   8 9 10 11 12
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