What are the major concern of science?

Question

What are the major concern of science?

Answer 1

To discover how things work.

Answer 2

That one day anything we have learned might not be true.

Because almost they're "theories".

Answer 3

I noticed that scientists concentrate more on space and electronics . these breakthroughs  have contributed a lot to the development of the world like transistors , mobiles and everything in between . but i wish they put more focus on medical research and try to eliminate diseases like AIDS and come up with new organs from stem cells and come up with better technology that doesn't consume more energy in households . a lot of things i want them to be pay attention to instead of more definitive pictures of galaxies or how the quarks work in an atom .