Cyanobacteria, as they still exist today, were the first organisms to carry out photosynthesis and release oxygen. Produced in primeval oceans about 2.5 billion years ago, this oxygen accumulated in ...

Long before the famous Underground Railroad, those seeking freedom from slavery traveled on foot, by boat and under cover of darkness to Fort Mose in Spanish-controlled Florida ...

The nation’s northern region has led the scientific quest to understand the aurora borealis. This summer, a 10,000-antenna radar is expected to begin the next phase of exploration.

ST. LOUIS – Historian and journalist Carter G. Woodson initiated the first National Negro History Week on Feb. 7, 1926. The observance was created to preserve and educate the public on Black history, ...

Black History Month is an annual observance in February that highlights the history and contributions of Black people. The month was chosen to coincide with the birthdays of President Abraham Lincoln ...

Want to test yourself even further? Take a squiz at the ABC's New Quiz topic page and see if you're a whiz at our previous quizzes. Posted Sun 1 Feb 2026 at 6:30pm Sunday 1 Feb 2026 at 6:30pm Sun 1 ...

The Castle of Light was built to reflect elegance, status, and optimism. Its design emphasized openness, brightness, and refinement. At some point, it was abandoned without restoration or reuse.

The forced Christianization of Hellas / Greece in the fourth century and after wounded ancient Hellenic / Greek culture but did not completely destroy. In medieval Greece (wrongly dubbed Byzantium), ...

Inventor Thomas Edison demonstrated his electric incandescent lights in public. He illuminated about 100 bulbs in and around his laboratory in Menlo Park, New Jersey. Edison used a carbonized bamboo ...

Traffic lights are not as straightforward as you may think. For instance, Japan has blue traffic lights, and while it's common to see the lights arranged vertically, some U.S. states mount them ...

Here’s a look back at what happened in the Chicago area on Dec. 30, according to the Tribune’s archives. Is an important event missing from this date? Email us. Many of those who could escape the fire ...

Last year, a team of American diplomats from the State Department’s Global Engagement Center traveled to two dozen countries and signed a series of memoranda. Along with their counterparts in places ...