1) The Victoria Falls, situated on the Zambezi River between Zambia and Zimbabwe, is one of the largest and most spectacular waterfalls in the world. It is over 1.7 kilometers (1 mile) wide and has a height of 108 meters (354 feet), attracting visitors with its breathtaking beauty and power.

2) The world's largest diamond, the Cullinan, was discovered in South Africa in 1905 and weighed over 3,000 carats.

3) The development of artificial intelligence (AI) has led to advancements in areas such as machine learning, natural language processing, and computer vision.

4) The tongue of a blue whale is so big that about 50 people could stand on it.