Eagle-Talk (Preparing for Episode 4!)

What is the evolutionary purpose of laughter?
How come goldfish can change gender but very few other species can?
Why is chocolate poisonous to pets?
What is the second most likely species on earth to evolve sentience/sapience? (Proto-humans were the first, obviously)
What is the difference between sentience and sapience?
What do you think martian multi-cellular life would look like if it existed? Venusian? Jupiterisian?
Why do we have five fingers? Why not six, or four?
*Repeat Akumu's pokemon question, but with Bulbasaur in particular*

More physics:
If photons are massless, then why can they impart force? Does it have something to do with lightspeed being essentially infinity and ∞ * 0 ≈ 1 in some branches of math? (Where "≈" means "kinda sorta equals but not really)
What would happen to the earth if a single atom (let's make it a fluorine atom, I like fluorine), heated to ~99.9972% of the planck temperature was placed in the center? How quickly would humanity be destroyed?
Feynman, Einstein, or Hawking?


To Schazer:
What's Japan like?