Title: Wood.
Question: If a growth ring has differences over one season, would the part nearest the tree's center be narrower or wider?

Title: Incandescent light bulb.
Question: How do gases prevent evaporation of the filament?

Title: Capital punishment in the United States.
Question: What goal did the ALI's study say could not be reconciled with the goal of individualized execution decisions?

Title: High-definition television.
Question:
Which encoding contains both progressive and interlaced content?