Not in the sense of bringing misfortune to someone else.
No, they do not exist.
yes
Curses don't exist, so I wouldn't worry too much.
no i never ever believe in cause
Bald eagles are endangered, but they really exist.
No, Medusa does not really exist. She is a fictional character from mythology.
No, It does not exist!!
There are none.
No, super hero didn't really exist
I don't think curses work on people, but i am convinced that black majic, also known in asian/muslim language as Jadu, Toona, do work and have worked on people who are very religious deep down in Islam.
Generational curses are those curses that do not end when a person dies. They are curses that follow the children, grandchildren, and great grandchildren of those who were cursed. They are passed on from one generation to the next.
There is a lot of information about curses found on the internet. Wikipedia has tons of information on curses as well as sites like How Stuff Works. Of course there is no scientific evidence for curses.