Trains offered the first form of truly high-speed land transportation. For nearly 100 years they reigned supreme for intercity and longer distance travel. During the first half of the 20th century automobiles and airplanes chipped away at the railway’s monopoly. The advent of jet airplanes and the modern highway system… Read more“Map Monday, Where are the World’s High-speed trains and How Fast are they?”
Category: Science
Map Monday, Lithium Extraction the next Gold Rush?
Is lithium as valuable as gold? Strictly speaking, no. Today’s market quote for gold is $55,643 per kilogram. For that money you can buy nearly 6,000 kilograms of lithium carbonate (99.5%) or lithium hydroxide monohydrate (56.5% pure). So, what’s all the hype about? Basics Lithium is the third element on… Read more“Map Monday, Lithium Extraction the next Gold Rush?”
Map Monday, Time Zones where did they come from?
Time zones, for most of human existence they didn’t matter. The most important points in time were sunrise, sunset, and noon when the Sun reached its highest point in the sky. Since the Earth is a sphere rotating on its axis as it orbits the Sun, these events are location… Read more“Map Monday, Time Zones where did they come from?”