1) Kimchi is a traditional Korean side dish made of fermented vegetables, primarily cabbage and radishes, seasoned with chili pepper, garlic, ginger, and other spices. It is a staple in Korean cuisine and is known for its tangy and spicy flavors. Kimchi is rich in vitamins, minerals, and probiotics, making it not only a delicious accompaniment but also a healthy addition to meals.

2) The national animal of Australia is the kangaroo.

3) The book series "The Chronicles of Narnia" by C.S. Lewis has sold over 100 million copies worldwide.

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