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El Niño
24 min read

If you want to understand how interconnected our planet is—how patterns and events in one place can affect life half…

Oct 7, 2024
Topic
Sea lce
24 min read

Polar sea ice grows and shrinks dramatically each year, driven by seasonal cycles. Habitat for wildlife and harbinger of changing…

Sep 16, 2016
Article
How to Interpret a Satellite Image: Five Tips and Strategies
12 min read

What do you do when presented with a new satellite image? Here's what the Earth Observatory team does to understand…

Nov 18, 2013
Article
Aerosols: Tiny Particles, Big Impact
17 min read

Tiny aerosol particles can be found over oceans, deserts, mountains, forests, ice sheets, and every ecosystem in between. They drift…

Nov 2, 2010
Article
The Water Cycle
15 min read

Landscape sculptor. Climate driver. Life supporter. Water is the most important molecule on our planet.

Oct 1, 2010
Article
Global Warming
28 min read

It is necessary to understand what global warming is, how scientists know it's happening, and how they predict future climate.

Jun 3, 2010
Article
Catalog of Earth Satellite Orbits
15 min read

Different orbits give satellites different vantage points for viewing Earth. This fact sheet describes the common Earth satellite orbits and…

Sep 4, 2009
Article
Planetary Motion: The History of an Idea That Launched the Scientific Revolution
10 min read

Attempts of Renaissance astronomers to explain the puzzling path of planets across the night sky led to modern science's understanding…

Jul 7, 2009
Article
Climate and Earth’s Energy Budget
19 min read

Describes the net flow of energy through different parts of the Earth system, and explains how the planetary energy budget…

Jan 14, 2009
Article