Coral reefs are among the most diverse and vital ecosystems on Earth, providing critical habitat and food for approximately 25% of marine species. These ecosystems are primarily made up of coral polyps, tiny organisms that form hard skeletons, which over time accumulate to form large reef structures. Coral reefs support a variety of marine life, in

The concept of time zones was introduced to standardize timekeeping across the world, especially as railroads and telecommunications began to expand in the 19th century. Before time zones, each city or region kept its own local time based on the position of the sun, which created confusion for travelers and businesses. In 1884, the International Me

The tallest buildings in the world are marvels of engineering and architecture, showcasing human ingenuity and the desire to push the limits of what is possible. The Burj Khalifa in Dubai, United Arab Emirates, holds the title of the tallest building in the world, standing at an incredible height of 828 meters (2,717 feet). Completed in 2010, the B

Vaccines are one of the most significant advancements in medical science, playing a key role in preventing the spread of infectious diseases. Vaccines work by stimulating the body's immune system to recognize and fight specific pathogens, such as viruses or bacteria. They typically contain small, inactivated, or weakened parts of a pathogen, called