posted on Feb, 16 2009 @ 09:33 PM
Well technically, thumbs/walking/etc don't count as they really aren't achievements
Personally, I have to say that our greatest achievement is shelter (housing, fire, etc), because we are the only species on earth that doesn't have
to adapt to our environment- we can change it.
And our worst achievement is something close to religion (especially Christianity and Islam), as it/they is/are the single largest historic and modern
limitation on progress and equality. (Both are infamously sexist, for example)