This is quite cool. Google has released a search tool for finding datasets! https://toolbox.google.com/datasetsearch
You can for instance find world surface temperature data, real-time assessment of hybridization between wolves and dogs, lot’s of x-ray datasets or data from breast cancer screenings etc…
The data seems to come from a lot of research projects where they have used different machine learning techniques to analyse the data.
Now that we have a lot better means of using machine learning and we have easy access to a lot of related data and our compute power has increased dramatically it might be that we will see quite a few improvements to older research results. I welcome this initiative and believe that the world will become a better place due to us collectively solving the worlds many problems using AI.