“Seeing how tall corn can grow comes down to internode length and quantity,” Karl explains—in other words, the number of leaves a stalk has and the distance between those leaves. He learned early on ...

Standing approximately 1,400 feet above the city, with letters 45 feet tall and more than 30 feet wide, the Hollywood sign is emblematic of both the City of Angels and the American dream.

With each letter of the sign standing at 45 feet tall and more than 30 feet wide, you can hardly miss it. A closeup visit is not going to happen, however: “No access to the Hollywood sign ...