Learn Earth Science

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From the troposphere to the exosphere, study the atmosphere. Topics include the ozone layer, magnetosphere, and weather.

Geology Science


Geology is the study and science of Earth’s land forms. This includes how they were created, have changed over time, and how they will evolve.

Life Science


Biology works with time, disease, ecosystems, and why we are here today. It also works on different scales like individual atoms to the entire biosphere.

Earth Science Career


If you are interested in a career in environmental science, there are lots of opportunities available. Find out how diverse the field is.

Outer Space


Space is beyond Earth’s atmosphere. It applies the concepts from physics, biology, and geology to explain our planet’s origin and evolution.

Ocean Science

Water Science

Water is all around us. From oceans to freshwater lakes, this field studies everything from deep ocean water life to the flow of currents.



What Is the Exosphere?

The exosphere is the upper part of Earth’s atmosphere. It starts at about 500 km and gradually extends into the vacuum of outer space at…
Climate Feedback Loops

15 Climate Feedback Loops and Examples

Climate feedback loops either amplify or reduce climate change. Positive feedback loops like permafrost melt amplifies climate change because it releases methane.



Soil Scientist Career

What Do Soil Scientists Do?

Soil scientists study how soils relate as a natural resource. This includes soil formation factors, classification, physical and chemical properties.
Geotechnical Engineer Career

What Do Geotechnical Engineers Do?

Geotechnical Engineers understand the behavior of earth materials. For example, they interpret rock and soil samples to investigate subsurface conditions.
Ecologist Career

Ecology Careers: What Do Ecologist Do?

Working in ecology is seeing conservation in action. These 7 questions and answers evaluate ecologists career for salary, job duties and potential employers.
Agronomist Career

What Do Agronomists Do?

Agronomists focus on crop production and applying new technologies. An agronomist studies plant science to improve efficiency in crop production.



Lahar: Flowing Mud at Volcanoes

“Lahar” is an Indonesian word for mudflow at volcanoes. Lahar flows down volcanoes as a mix of mostly water, mud and rock debris (similar to…


Mars Atmosphere Composition

Mars Atmosphere Compared to Earth

Carbon dioxide dominates Mars atmosphere. But Earth is rich in nitrogen and oxygen. Mars has a much thinner atmosphere. In fact, Earth is 100x denser.
Spheres of Earth

The 17 Spheres of Earth

How many spheres of Earth exist on Earth? If you count them all, you would get about 17 of them. This is the definitive guide…
Earth tilt

Earth Tilt: 23.5 Degrees Axis

Imagine sticking a pencil into the Earth’s poles and twisting your wrist 23.5°. This is the Earth tilt essential in seasonal patterns, climate and life…
Venus Facts

10 Planet Venus Facts [Infographic]

Planet Venus neighbors the Earth. It’s the second planet closest the sun. Other facts include its counterclockwise rotation and how it rains sulfuric acid.


River Delta Schematic

River Delta: How It Forms

Streams carrying too much sediment clogs the entrance into the basin. As sediments dump in, water flow decelerates and widens the entrance forming a delta.