Can Atheists explain to me why there is evil and suffering in the world?

[deltapapha]

....we are the only species that can't seem to live in harmony with the rest of nature or the world in general.

what do you mean by 'harmony'?

when you say "rest of nature" are you talking about specifically biological nature or rocks and water too?

are you suggesting there is a difference between "nature" and "the world in general"?