Epinephrine (ep-uh-nef-rin, -reen) is also known as adrenaline. It is a hormone that is secreted by the adrenal glands. (1, 3). Adrenalin, without the e, was originally used as a trademark for a product made by an American pharmaceutical firm Parke, Davis & Co.
The Burj Khalifa building in Dubai, United Arab Emirates is the world's tallest building. Completed in January 2010 with 160 stories which reach 2,716 feet (828 meters) high, it is a mix of Hotel/Residential/Office. Alexander Hassenstein/Getty Images.
The Pentagon was the world's largest office building for a while. The Vehicle Assembly Building, where NASA puts together its rockets, is pretty amazing. It was built in 1966 and was only supposed to last 10 years. It's still in use. Burj Khalifa is currently the tallest man-made structure in the world. You might find this list interesting: List of largest buildings in the world.