Forestry Career: What Do Foresters Do?
Money doesn’t grow on trees for foresters but it still makes a great career option. You will harvest timber while conserving the environment as a forester.
What is Meteorology? 15 Branches of Meteorology
Weather and climate is all around us. It affects our work and play. Big disasters cost money and lives. Here are the branches of meteorology.
![Universe Expansion: The Farthest Galaxy from Earth [Infographic]](https://earthhow.com/wp-content/uploads/2018/12/Universe-Expansion-425x319.png)
Universe Expansion: The Farthest Galaxy from Earth [Infographic]
The universe is immeasurable in size. Universe expansion is the theory that galaxies and all matter in space are increasing in distance between each other.
Theory of Evolution: Charles Darwin and Natural Selection
In flesh and blood, you have been genetically fine-tuned as a product of natural selection. Without evolution, complex beings like humans wouldn’t exist.
How Do Glaciers Form?
Like a rake scraping the dirt, glaciers leave a lasting impression on the land. They can erode mountains, transport vast amount of rock and reshape the land.
Coal Formation: How Coal Forms
Hydrocarbons, oil and coal formation in general are made from living organisms that have been compacted from intense heat and pressure millions of years ago.
LUCA: Last Universal Common Ancestor
All living things originated from a common ancestor called the last universal common ancestor (LUCA). The origin of life existed before LUCA (3.5 – 4.1 bya)
Sun Fusion: How the Sun Heats Up Earth
Fusion reactions power the sun. By fusing hydrogen to helium, the sun releases vast amounts of energy towards Earth. Then, sun fusion reaction heats Earth.
What is Net Primary Productivity for Earth?
The Earth breathes. We gauge Earth net primary productivity by how much carbon dioxide plants absorb from the atmosphere minus how much it respires.
Planet Formation and the Core Accretion Theory
We use the core accretion model to describe planet formation and the creation of our solar system which includes a central star and natural orbiting objects.
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 on Earth.
The Dinosaur Era: When Dinosaurs Dominated
If you rewind the clock 230 million years back, dinosaurs dominated the land. Not just for a short span of time. But they lived for over 175 million years!
Mountain Building: How Mountains are Made
When convergent plates collide, the lithosphere thrusts upwards. This geologic process of vertical upheaving are orogenies or mountain building events.
![What Happened in the Archean Eon? [4.0 to 2.5 billion years ago]](https://earthhow.com/wp-content/uploads/2018/07/Archean-Era-Timeline-Dark-Feature-425x319.png)
What Happened in the Archean Eon? [4.0 to 2.5 billion years ago]
Earth formed a stable climate in the Archean Eon. Because it cooled down from its molten state, Earth was able to support oceans, continents and oxygenation
Density of Earth: What is the Earth Made Of?
Earth density steadily increases as you go inwards from the crust to core. If you average density throughout the whole planet, it is about 5.513 g/cm^3.
