1) A newborn kangaroo is about 1 inch (2.5 centimeters) long and weighs less than a gram.

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

3) The abolition of slavery in the United States was officially proclaimed with the ratification of the 13th Amendment to the Constitution in 1865.

4) Emma Stone is an American actress known for her roles in films such as "La La Land," "Easy A," and "The Help." She has received critical acclaim and several awards, including an Academy Award, for her performances, establishing herself as a talented and versatile actress.