Halley's comet occurs every 76 years and consists of gases and dust. High-rise buildings are tall structures with 4 storeys or more. Atoms are basic building blocks of matter and exist naturally. Music is frequencies between 40 Hz and 16,000 Hz
Halley's comet occurs every 76 years and consists of gases and dust. High-rise buildings are tall structures with 4-story height. Atomic theory describes fundamental building blocks of matter. Acupuncture uses energy channels to treat diseases and relieve pain
Dubai has 108 buildings over 180 meters tall. Burj Khalifa stands at 828 meters, world's tallest building. Marina 101 is second tallest at 425 meters. Dubai has 18 buildings over 300 meters, most in world. Skyline ranks eighth globally with 248 buildings over 100 meters
First skyscrapers built between 1884-1945 in New York and Chicago. Chicago's Home Insurance Building (1885) was first true skyscraper. Technological advancements enabled iron-framed structures with deep foundations. New York pioneered tower design, Chicago focused on palazzo-style buildings
Moscow City is a multifunctional complex in western Moscow. Conceived in 1991 by Boris Tkhor as post-Soviet business centre. Contains over 20 innovative structures, including eight of Russia's ten tallest buildings
Press emergency call button for 2-3 seconds several times. Use light source to identify emergency buttons. Contact emergency services via phone or shout for help. Stand at back of elevator away from doors. Stay calm and perform deep breathing exercises