How did the Universe begin?
So we settled for an answer in this question that it did begin? Astrophysicists have some idea how it evolved, but explaining Big Bang and singularity is beyond us. Is explaining HOW an answer to WHY, any way? No, I do not prophesy outside agency.
What is the Universe made of?
Energy and mass, or waves and particles so things we can measure with electromagnetic instruments or proposed dark energy and matter, which we deduct as having gravitational pull on the measurements we take. To be is to be observable.
What is the origin of good?
Question leads its answer. So good had an origin? What the question really asks is "how good became to be? What is good in the first place?"
What is the origin of evil?
As good, evil is an adaptation and it is what we carry in our genome, given right environmental conditioning it will resurface.
Is there free will?
If there is, I would expect to find a proof of it in another species. Isn't it merely an ability or preference to choose one might display in their behaviour? Most humans I know prefer not to choose upon reflection.
What is the nature of the mind?
We need to first answer, "how does the brain work?" How does consciousness appear in an organ which evolved for aiding perception? Mind is a memory, neuronal paths with electrical current running through reigniting associations. Why mine is so fuzzy?
How do you find happiness?
There is no happiness. There is joy, satisfaction, laughter or feeling happy. All we can do is to concentrate on situations in which we react with such emotions. Happy emotions are our brain rewards for ourselves. This could be destructive.
How do you find truth?
Is truth an opposition to false or a lie? In both cases one needs forensic methods of investigation.
What is the meaning of life?
42. What was the question?
What is the role of evolution?
Adapt or die. Adaptation can be hindrance to survival as well.
What happens after death?
Of cause there is something after death. The energy does not disappear. Energy can not be created or destroyed, it can change form though.
What is going to happen to humankind?
"What is the most likely cause of our extinction?" This should be the question. Self inflicted cause is the most likely answer.