1) The Eiffel Tower can be 15 cm taller during the summer due to thermal expansion.

2) The taco, originating from Mexico, is a versatile and flavorful dish enjoyed worldwide. It consists of a tortilla filled with various ingredients, such as seasoned meat, vegetables, cheese, and salsa. Tacos can be made with soft corn tortillas or crispy shells and can be customized with different toppings and fillings. They are a popular street food, casual meal option, and a symbol of Mexican culinary heritage and vibrant flavors.

3) The word "computer" contains three vowels: O, U, and E.

4) The world's largest species of shark, the whale shark, can reach lengths of up to 40 feet (12 meters) and weigh over 20 tons.