Why does it rain? What are the particulars of this mundane, yet extraordinary achievement of our incredible atmosphere?
What sound does a fox make? It all depends on the situation and the aggressiveness of the individual, but sounds include screams, snorts, squeals and barks.
Astronomy questions and answers: Although space is not a perfect vacuum, it surrounds the sun and other stars, unaffected by heat or other factors.
If you receive a gift of jewelry or antiquities from a war-zone or other foreign region, check to make sure it’s not part of the area’s cultural heritage.
Everyone says that no two snowflakes are alike, but how do we really know? By calculating the probability based on the Birthday puzzle in math.