Perhaps tetra-ethyl lead for petrol, and CFC's. Both invented by the same guy.
Maybe the nuclear bomb.
Or DDT.
The Invention Convention is the worst project ever! Don't ever tell any of your teachers about it cause they might wanna do it and your life will be over. Trust me, WORST PROJECT ON EARTH!
the candy lipstick
In my opinion, the nuclear bomb.
The greatest invention ever built by mankind was probably the electric wire system that allowed us to invent further technology like computers.
Its sliced bread apparently.
The Invention Convention is the worst project ever! Don't ever tell any of your teachers about it cause they might wanna do it and your life will be over. Trust me, WORST PROJECT ON EARTH!
The worst invention in the past 200 years will vary depending on who you ask. Many people think that the worst invention is the car and others think that it is the Internet.
The in in invention convention is the worst project in the world
it was the worst invention
the candy lipstick
In my opinion, the nuclear bomb.
it is not the worst ever website.
The worst ever tsunami recorded was 9.5! that was the worst EARTHQUAKE ever recorded you retard! valdivia chile, 22 may 1960
TRUMP WAS THE WORST PRESIDENT EVER IN HISTORY!
Rebecca regan and kate Wilson r the worst mings ever !!!!!!!
The worst books ever include the entire House of Night series.
Worst Episode Ever was created on 2001-02-04.