Title: Light-emitting diode.
Question: What LEDs have a very steep I/V curve?

Title: Financial crisis of 2007%E2%80%9308.
Question: How much are total losses estimated to be from falling home prices?

Title: Department store.
Question: Where was the store moved in 1857?

Title: New Haven, Connecticut.
Question:
New Haven served as home to what two notable 19th century architects?