Uh, bad idea. The reason scientists use Latin terms to define things is because it's a dead language, it doesn't change anymore. If we were to start using it again, then the meanings would change over time, causing greater confusion and inaccurate naming.
Really nice pic, balerion07. I think Firefly got it right where in the future everyone speaks either English or Mandarin. I would really love to learn to speak another language, but I've tried and discovered that languages just aren't my strong suit.
And that was just the Proto-Indo-European Tree. I would love to see a picture that had the thousands of languages known to the world today. I took 3 years of Spanish in High School, but have forgotten quite a bit of it. The only way I would ever really learn another language very well is to actually travel to the place.
Additionally Mandarin is only 1 of 5 different languages spoken in China. If they cannot have one united language in the country where it exists now I hardly doubt it has the capability to become the world language.
I find it interesting that some sites report Portuguese as more spoken than Russian.
There will be never monolingualism, the day we will speak only one language countries will cease existing. If there will be only a country the end of humanity will come.
I think it will either be Mandarin or English. Mandarin is the most widely spoken language and English is the second most. But I definitely prefer English because in most other languages you have to say like 10 words for 3 words in English and all other languages are mostly spoken very fast and confusing.