Earth Science & Climate

What Color Is the Nile River and Why Does It Change?

What Characteristic Distinguishes a Meteorite From a Terrestrial Rock?

Are Trenches Formed at Convergent or Divergent Boundaries?

What USDA Plant Hardiness Zone Is Olympia, WA?

How Did Florida Get Its Shape?

Why Is It Still Cold in April?

How Strong Is Quartz? Hardness, Fracture, and Durability

How Is an Arête Formed by Glacial Erosion?

Why Can a Faint Image of the Moon Be Seen During a New Moon?

Is Copper an Ore? Explaining the Difference

How Long Was the Precambrian Era?

What Role Does the Earth’s Core Play in Volcanic Eruptions?

What If Ice Was More Dense Than Water?

Can You See the Northern Lights in Northern California?

Why Is Groundwater More Difficult to Clean Than Surface Water?

How Often Does It Snow in North Carolina?

How Were the Finger Lakes Formed?

Where to Buy Lava Rock, Stones, and Products

Can You See Titan With a Telescope?

What Is on the Other Side of the Sun?