MS-ESS2-2
Construct an explanation based on evidence for how geoscience processes have changed Earth's surface at varying time and spatial scales.
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AnimalsTar pit clues provide ice age news
New analyses of insects and mammals trapped in the La Brea Tar Pits point to climate surprises during the last ice age.
By Sid Perkins -
EarthExplainer: The volcano basics
Here’s an overview of what they are, where they form and the many ways they pose dangers.
By Sid Perkins -
PhysicsBracing sand sculptures with gravity
Natural sculptures of sandstone withstand strong winds and rains. The reason, a new study concludes: Gravity holds the sand grains together.
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EarthThirst for water moves and shakes California
Here’s a scary cost to pumping up groundwater to slake the thirst of crops in California’s Central Valley: It may uplift nearby mountains and trigger tiny earthquakes, experts find.
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MathTeen puts calculus on ice
Jacob Nichols wondered if he could use calculus to find the volume of the icicles building up outside his house. His study earned him a spot at the 2014 Intel International Science and Engineering Fair.
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EarthThe quake that shook up geology
North America’s biggest earthquake struck 50 years ago. Here’s what science has learned about Earth since the 1964 Great Alaskan Earthquake.
By Beth Geiger -
EnvironmentDoes lightning sculpt mountains?
A new study sparks debate about how much rubble on a mountainside has been blasted loose by powerful bolts from the sky.
By Sid Perkins -
EarthExplainer: Ice sheets and glaciers
Ice sheets and glaciers give scientists clues about climate change.
By Douglas Fox -
EarthExplainer: Antarctica, land of lakes
There are many, although they tend to be buried under rivers of ice.
By Douglas Fox -
EarthBig rocks’ balancing acts
Scientists study how balanced boulders resist falling over — and what that may say about earthquakes.
By Douglas Fox -
EarthTsunami’s trek traced in the sky
Scientists photograph atmospheric ripples that followed the March tsunami across the Pacific.
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