After newly clear canals in Italy were spotted with fish 'returning' as tourists departed, there was a meme in 2020 that 'nature is healing, we are the ______.' What word fills the blank?

The term meme was introduced in 1976 by British evolutionary biologist Richard Dawkins (author of "The God Delusion"). He conceived of memes as the cultural parallel to biological genes and considered them as being in control of their own reproduction.