Oct 19, 2023 · Rainbows are often portrayed as bridges between people and supernatural beings. In Norse mythology, for instance, a rainbow called the Bifrost connects Earth with Asgard, …

Dec 4, 2025 · Geography is the study of places and the relationships between people and their environments.

Oct 19, 2023 · Electromagnetic light energy is everywhere, but very little of it can actually be seen by the human eye.

On May 28, 1830, Congress passed the Indian Removal Act, beginning the forced relocation of thousands of Native Americans in what became known as the Trail of Tears.

Mesopotamia was one of the first places where humans started practicing settled agriculture, and the earliest known writing system, cuneiform, originated there as well. It is a historic region of …

May 1, 2024 · Yellowstone National Park is the first national park created in the United States. It remains popular due to its unique volcanic features and abundant wildlife.

Fossils are the preserved remains, or traces of remains, of ancient animals and plants.

Nov 21, 2024 · Learn the risks our world's coral reefs are facing and what they mean for our future and the future of the ocean.

A rain shadow is a patch of land that has become a desert because mountain ranges block much of the rainfall necessary for plant growth.

Aug 14, 2025 · Pollution is the introduction of harmful materials into the environment. These harmful materials are called pollutants.