Why Do You Feel Butterflies in Your Stomach?

It may have happened when you locked eyes with your secret crush, or before an important job interview, but what exactly caused that strange, fluttering sensation in your stomach?

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The World’s Shortcut: How the Panama Canal Works

Panama Canal
CANAL, CENTRAL AMERICA
WRITTEN BY: Burton L. GordonNorman J. PadelfordAileen ChoWayne D. BrayWilliam E. Worthington
See Article History
Alternative Title: Canal de Panamá
Panama Canal, Spanish Canal de Panamá, lock-type canal, owned and administered by the Republic of Panama, that connects the Atlantic and Pacific oceans through the narrow Isthmus of Panama. The length of the Panama Canal from shoreline to shoreline is about 40 miles (65 km) and from deep water in the Atlantic (more specifically, the Caribbean Sea) to deep water in the Pacific about 50 miles (82 km). The canal, which was completed in August 1914, is one of the two most strategic artificial waterways in the world, the other being the Suez Canal. Ships sailing between the east and west coasts of the United States, which otherwise would be obliged to round Cape Horn in South America, shorten their voyage by about 8,000 nautical miles (15,000 km) by using the canal. Savings of up to 3,500 nautical miles (6,500 km) are also made on voyages between one coast of North America and ports on the other side of South America. Ships sailing between Europe and East Asia or Australia can save as much as 2,000 nautical miles (3,700 km) by using the canal.

From its opening in 1914 until 1979, the Panama Canal was controlled solely by the United States, which built it. In 1979, however, control of the canal passed to the Panama Canal Commission, a joint agency of the United States and the Republic of Panama, and complete control passed to Panama at noon on December 31, 1999. Administration of the canal is the responsibility of the Panama Canal Authority (Spanish: Autoridad del Canal de Panamá [ACP]), which answers solely to the government of Panama. https://www.britannica.com/topic/Panama-Canal

Why So Many Airlines are Going Bankrupt

An airline is a company that provides air transport services for traveling passengers and freight. Airlines utilize aircraft to supply these services, and may form partnerships or alliances with other airlines for codeshare agreements. Generally, airline companies are recognized with an air operating certificate or license issued by a governmental aviation body.

Airlines vary in size, from small domestic airlines to full-service international airlines with double decker airplanes. Airline services can be categorized as being intercontinental, domestic, regional, or international, and may be operated as scheduled services or charters. The largest airline currently[when?] is American Airlines Group.

¿Qué pasa si un país se queda sin luz?

Todos nos hemos quedado sin luz alguna vez, pero… ¿qué pasaría si todo un país al mismo tiempo se quedara sin luz? Cómo nos adaptaríamos y las consecuencias más inesperadas.

Cuán comunista es realmente China hoy | BBC Mundo

Se cumplen 70 años desde que Mao Zedong se hiciera con el poder en China y creara la República Popular. Pero ¿cuánto queda del comunismo en la que hoy es la segunda economía del mundo?