1) Orchids are one of the largest families of flowering plants, with over 25,000 species.

2) The painting "The Scream" by Edvard Munch is an iconic work of art that depicts a figure in anguish and has become a symbol of existential angst.

3) The first commercial GPS (Global Positioning System) was launched in 1989 and provided accurate positioning and navigation capabilities to users worldwide.

4) The word "oxygen" contains two vowels: O and E.