1) The study of fossils is called paleontology, and it helps us understand the history of life on Earth and the process of evolution.

2) The assassination of Archduke Franz Ferdinand of Austria in 1914 triggered the start of World War I.

3) The first modern health insurance policy was introduced in Germany in the late 19th century.

4) The human brain has a storage capacity equivalent to around 2.5 petabytes, which is roughly equivalent to three million hours of TV shows.