Wait, I can't parse that sentence. Does it mean to say bacteria (`the first ones`) were only found in 1977 ?
It's not a well-written sentence.
Aha ! Thanks.
Quite frankly the rest of the article isn't easy to decipher either (but English isn't my first language).
The list of beliefs/theories that could change throws me off because some statements are about some topics that I thought most were in agreement (eg: the universe is expanding)
> Things will continue to change. Below I have put a few things that I think could change from now into the beginning of the next century.
> - The Universe is not expanding.
The cosmology list is more about fact waiting to happen that expansion of knowledge but I am just a layman.
Or something.
> ...the bacteria and the archaea. The latter (archaea) were completely unknown until the first ones (bacteria) were found in 1977.
"In 1977, Carl Woese, a microbiologist studying the genetic sequences of organisms, developed a new comparison method that involved splitting the RNA into fragments that could be sorted and compared with other fragments from other organisms."