In this interactive activity adapted from NASA and the U.S. Geological Survey, learn about Earth's albedo (the ratio of reflected vs. incident solar radiation), how pollution alters albedo, and how ice-albedo feedback may accelerate...

[Free Registration/Login may be required to access all resource tools.] A microscope is a tool used to make things that are too small to be seen by the human eye look bigger. Before microscopes were invented in 1595, the smallest things...

This site details what radiation is, the physics of radiation, and radiative transfer as it occurs in nature. Content explores the electromagnetic spectrum, electromagnetic waves, properties of radiation, and solar radiation.