Venus, the second planet from the Sun, is perpetually veiled behind

opaque clouds of sulfuric acid droplets atop a hot, heavy, mostly carbon

dioxide atmosphere. In size and apparent composition, however, it is a

near twin-sister of the Earth. Why is it do different? This lecture

reviews the basic properties of Venus, and examines the similarties and

differences with the Earth. Recorded 2006 Nov 9 in 100 Stillman Hall on

the Columbus campus of The Ohio State University.