Question: approximately, how much scientists are there in the world right now?

Hannah Currant answered on 23 Jan 2019:

This is a really hard question. There are MANY scientists in the world, definitely millions, most likely over 5 million. There are scientists working in many different settings, some work in universities but also some work for hospitals, companies, the government and more so it’s kind of hard to get a good estimate. But there is a big community of scientists across the globe that work together to progress science.