Ask Ethan: What’s the quantum reason that sodium and water react? (Synopsis)

“Chlorine is a deadly poison gas employed on European battlefields in World War I. Sodium is a corrosive metal which burns upon contact with water. Together they make a placid and unpoisonous material, table salt. Why each of these substances has the properties it does is a subject called chemistry.” -Carl Sagan Every beginning chemistry … Read more

Ask Ethan: How many Black Holes are there in the Universe? (Synopsis)

“Black holes are the seductive dragons of the universe, outwardly quiescent yet violent at the heart, uncanny, hostile, primeval, emitting a negative radiance that draws all toward them, gobbling up all who come too close…these strange galactic monsters, for whom creation is destruction, death life, chaos order.” -Robert Coover For the third time since it … Read more