Research related to food, but not agriculture per se... Something related to nutrition? Synthetic nutrition of some kind.
Aha! I got it!!!! Funny, I was thinking about this very thing a couple of weeks ago and was looking up some stuff about Antarctica. I had popped back in here late and was thinking about my last couple of answers, but puzzling about what you meant by "axis". Then I really thought about "axis" and boom! Antarctica popped in my mind immediately. So it's:
Antarctic research stations by country! Yay me!
I found the map you used as well once I looked it up.
Yes, the colors are not very intuitive indeed. Colors don't represent anything. The legend is from Highest to Lowest.Can you explain what the legend is? Because currently, if it is in order (?), it looks strange due to red tones being in both extremes. I suspect the deeper red means lack of item, while gray is lack of information, but the colors are very counter-intuitive
Unless each color means a distinct type of the item/thing.