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

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

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

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

I review the basic properties of Venus, and examine the similarties and

differences with the Earth. Recorded 2007 Nov 8 in 1000 McPherson Lab on

the Columbus campus of The Ohio State University.