[syhprum]

Although they are worrying things to have around nuclear bombs have not killed many people as weapons go, the worst damage they cause is that they deter the building of nuclear power stations with the result that power is still generated from coal that results in a large number of deaths from pollution and causes climate change from CO2 emissions.

[Tomassci]

Atomic bomb. Oppemheimer said "it was death, world destroyer"

[Hayseed]

I think the worst invention is something nasty that can reproduce/replicate, then mutate without losing the nasty.  If one gets loose, we're in trouble.

[Bored chemist]

I think the worst invention is something nasty that can reproduce/replicate, then mutate without losing the nasty.  If one gets loose, we're in trouble.

From the point of view of many species on Earth, that's us.

[axscientist]

There's quite a few. The Cat Wig. The Pedal-Powered Wheelchair. The Inflatable Dartboard.

[LookOut2021]

Although it was the Manhattan project that brought about the realization of the atomic bomb, it was Albert Einstein who was responsible for its development.  I believe this is one of the worst inventions that can cause destruction to humanity.

"I love the humans and I love my violin, but by my advice they built the atom bomb. I am Einstein. Professor Albert Einstein. Born at March 14 1879 in Ulm." - Friedrich Dürrenmatt, The Physicists.

I just love that quote, but in all seriousness: It's still kindda harsh to make Einstein alone responsible for the bomb because if we are fair here, basically everyone wanted the bomb during that time. If not for him, someone else might have invented it anyway. Heck, even countries like Switzerland and Sweden tried to get nukes at one point.

[Zer0]

Thomas Midgley Jr.

[William Hardy]

I googled up and Thomas Midgley this name came up.