The dictionary defines fission as “a splitting or breaking up into parts,” while fusion is “a merging of separate elements into a unified whole.”

From earliest mankind to only about 400 years ago, all that we knew about our universe was what we could see with the naked eye. In 1610, Galileo started studying the skies with his telescope and made discoveries that would change our perspective forever. He observed that Saturn had rings an…

The dictionary defines evolution as “A theory that the various types of animals and plants have their origin in other preexisting types and that the distinguishable differences are due to modifications in successive generations;” or “The process by which different kinds of living organisms a…

Early in the 20th century, slight changes in the orbits of the two most outer planets, Neptune and Uranus, caused American astronomer Percival Lowell to believe there might be another planet out there near their orbits. He reasoned that the gravitational pull of something large was affecting…

Digital communications in the form of telegraph in the 19th century, and radio and telephone in the 20th, set the stage for the Internet. The launch of the Russians’ Sputnik in 1957, the first man-made satellite, not only began the Space Age, but also opened the door to the realization that …

The sun emits radiation over a broad spectrum of wavelengths: light that is visible, infrared that you feel as heat, and ultraviolet that you don’t see or feel.

What is pollution? The dictionary defines it as “the presence in or introduction into the environment of a substance or thing that has harmful or poisonous effects,” or “the action or process of making land, water, air, etc., dirty and not safe or suitable to use.”

The Journal of the American Medical Association has written, “Vaccines are among the greatest achievements of biomedical science and public health, stimulating protective immune responses against acute and chronic infectious diseases as well as some that result in cancer.”

Cell phones have been around for more than 50 years.

Batteries go back much longer than most people think. Clay pots were found outside of Baghdad dating from 200 B.C. They contained an iron rod surrounded by copper sheathing. Testing revealed that the vessels had originally been filled with an acidic liquid like vinegar, leading scientists to…

Everyone knows that in summer it’s hot, and in winter it’s cold. But what makes the weather change from day to day or week to week?