If it's 10:00 AM in London (GMT), what time is it in New York City (Eastern Time, GMT-5)?
Lake Baikal, the deepest freshwater lake in the world, is located in which country?
Which sovereign state is the smallest in the world by both area and population, serving as the spiritual center of the Roman Catholic Church?
Often called 'The Roof of Africa', which high-altitude region is known for its unique Afro-alpine ecosystems and as the source of the Blue Nile River?
Which continent is entirely located in the Southern Hemisphere and is also a single sovereign country?
Which city is the most populous in the world by urban agglomeration (metropolitan area), often exceeding 35 million residents?
What is the term for a narrow strip of land connecting two larger landmasses, with water on either side?
The ancient city of Petra, famous for its elaborate rock-cut architecture, is located in the desert of which modern-day country?
Which major European river flows through four capital cities – Vienna, Bratislava, Budapest, and Belgrade – before emptying into the Black Sea?
Which U.S. national park is home to the world's largest trees by volume, the Giant Sequoias?