The headquarters of the International Atomic Energy Agency (IAEA) is located in (B) Vienna, Austria. Vienna has been the headquarters of the IAEA since its establishment in 1957. The city's selection as the headquarters reflects its role as a neutral and international city, making it a suitable location for an agency tasked with promoting the peaceful use of nuclear energy and preventing its use for military purposes.

Downs grasslands, commonly known as "downs," are extensive grassy plains found in Australia. These grasslands are a distinctive feature of the Australian landscape, characterized by vast expanses of open grassy areas. They play a crucial role in supporting unique ecosystems and biodiversity in Australia. Downs are often associated with pastoral activities and are utilized for grazing livestock, especially in regions with a semi-arid to arid climate. These grasslands contribute to the ecological diversity of the Australian continent.

The three largest sovereign countries by surface area are Russia, Canada, and the United States. Together they occupy roughly a quarter of Earth's landmass. Other heavyweights in size are China, Brazil, Australia, India, Argentina and Kazakhstan.

The five oceans from smallest to largest are: the Arctic, Southern, Indian, Atlantic and Pacific.

Africa is known as the "Dark Continent" because it was unexplored for a long time. The term was coined by Welsh journalist and explorer Henry Morton Stanley in his 1878 travelogue. Stanley considered Africa to be mysterious and poorly known. 

The Strait of Gibraltar connects the Atlantic Ocean with the Mediterranean Sea and separates Spain on the European continent from Morocco on the African continent.

The Pacific Ocean is almost triangular in shape. It's not perfectly round, but it appears circular when viewed on maps and globes. The Pacific Ocean's apex is in the north at the Bering Strait. 

The Chinese government pledged US$40 billion for the creation of the investment fund established on 29 December 2014.