Quotes from Mark Jerome Walters

Sex is a relatively recent addition to the dance of life. For more than 2,000,000,000 years, asexual reproduction was the rule. You know, if you were a creature, you just separated into two clones.

Two-parent sex appeared on the scene about 500,000,000 years ago.

The closest thing to the human immunodeficiency viruses, Hahn explained, are the simian equivalents, SIVs. But "simian immunodeficiency virus" is a huge misnomer. The virus doesn't harm the immune systems of these natural hosts; they don't even seem to get sick. "If we could figure out how simian immune systems deal with the viruses, we might have a clue to controlling AIDS," she said. "That very hope drives my work.