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, where the gods live.

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

Rainforests play an invaluable role in sustaining life, but every year, large portions of them are cut down for logging, mining, and cattle ranches.

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.

Feb 26, 2025 · Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.

Dec 9, 2024 · A region is an area of land that has common features. A region can be defined by natural or artificial features.

This collection features map activities designed to strengthen spatial thinking skills for students. Spatial thinking allows students to comprehend and analyze phenomena related to the places and spaces …

Feb 2, 2024 · The sun is an ordinary star, one of about 100 billion in our galaxy, the Milky Way. The sun has extremely important influences on our planet: It drives weather, ocean currents, seasons, and …

Nov 15, 2024 · The four-wheeled transportation vehicle symbolizes the promise and the pitfalls of the modern age.

May 9, 2025 · A biome is an area of the planet that can be classified according to the plants and animals that live in it.