Who wrote the Harry Potter books?

J.K. Rowling

Who played the Grinch in Ron Howard's live-action film adaptation? What does SPF in sunscreen lotions stand for? What object do people open up when it rains to stay dry? Which utensil did the Pilgrims primarily use during the first Thanksgiving feast? Who is famous for circumnavigating Australia in 1801–1803, making detailed maps?