In 1957, the United States conducted its first underground nuclear test, known as Rainier, at the Nevada Test Site. The device was detonated inside a carved tunnel deep within the rock, marking a major shift from open-air tests to underground experiments that produced far less radioactive fallout. The explosion created a powerful seismic wave that scientists used to study how nuclear blasts behave beneath the earth. via: NNSANevada yt | History In Pictures

The Americas have seen a major demographic reshaping over the past century. Using historical census records and UN estimates, the data shows how the region shifted from a North-heavy population map in 1939 to a far more balanced distribution by 2025. 1️⃣ The United States stayed the largest — but grew slower than others. With about 138M people in 1939, the U.S. led the hemisphere by a wide margin. By 2025 it reached 347M, but several Latin American countries expanded at far higher rates, changin

✈️ Largest Airlines by Market Capitalization (2025) The global aviation industry continues to recover and expand, with major airlines strengthening their financial positions. Delta Air Lines leads the world, followed closely by Ryanair and United Airlines, reflecting strong demand and solid market confidence. 🌍 Asia, Europe, and the United States dominate the rankings, showcasing how international travel has become a key driver of economic growth. 📈 Low-cost carriers, premium national airlines

33K views · 143 reactions | Operation Fly Formula. United Airlines...