I think for me, as an educator for most of my professional life is the current worldwide revolution in education. You can see some of the symptoms of this inevitable change already occuring in developed countries by the way in which education-inflation has increased. Where 10 years ago a degree was required to do a job, now a masters is required. Though the job requirements really havent changed.
The problem is, society itself has changed. When the whole system of education was created, particulariky that of western civilization, it was devised to meet the needs of industry ( moreover the industrial revolution). This is why, wherever you go (as remarkable as it sounds), from Rio to London, the structure of education is exactly the same. At the top are maths and languages and at the bottom are the humanities; from music to drama. Regardless of where you go, this is repeated. How many of us were benignly steered away from subjects we liked in school because we we were told (whether informally or formally) ; " Dont study art, you cant be artist...Dont study music, you cant be musician". But this rhetoric is profoundly misguided. Time and time again, we see children demonstrate particular talent(s) in one or more areas, butwe squander them, pretty ruthlessly because the system of education prioritises subjects that are favourable to industry. But society has moved on a great deal since the advent of the industrial revolution.
Why isnt music taught with the same presence of math? Mathematics is of course important, but so is music, drama, dance et al.
This is where I think the greatest societal change will begin, as is already underway in many developed countries. Tailor-suited education that focuses the talents and potential of children to help nurture skillsets so they can self-actualise and be whom they were always destined to be. Definitely not steered into a direction of employment to work at some nameless corporate entity factory.
This I think would probably be the most positive contributive factor to human progress in the 21st century. Well rounded individuals with their potentials reached, free to claim their niche in the world and be all the more happier for it.
Apologies for any typos, im on my samsung tab at 2am. :)