Calli Guerrero-Waite faces a wrenching moral dilemma. Caught in a painful marriage, she sees a new life opening up for her when she has an affair with Jake Sanchez. Ready to divorce her anthropologist husband, circumstances abruptly alter. Conscience calls her one way, love another. The way that Calli and Jake confront the pull of conscience, the dictates of Calli's powerful husband, the scorn of family and friends, and a concern for her two sons forms the crux of Darwin's Law.

This early work by Alfred Russel Wallace was originally published in 1855 and we are now republishing it with a brand new introductory biography. 'On the Law Which Has Regulated the Introduction of New Species' is an article that details Wallace's ideas on the natural arrangement of species and their successive creation. Alfred Russel Wallace was born on 8th January 1823 in the village of Llanbadoc, in Monmouthshire, Wales. Wallace was inspired by the travelling naturalists of the day and decided to begin his exploration career collecting specimens in the Amazon rainforest. He explored the Rio Negra for four years, making notes on the peoples and languages he encountered as well as the geography, flora, and fauna. While travelling, Wallace refined his thoughts about evolution and in 1858 he outlined his theory of natural selection in an article he sent to Charles Darwin. Wallace made a huge contribution to the natural sciences and he will continue to be remembered as one of the key figures in the development of evolutionary theory.

This early work by Alfred Russel Wallace was originally published in 1858 and we are now republishing it with a brand new introductory biography. 'On the Tendency of Varieties to Depart Indefinitely From the Original Type' is a short article on variation and evolutionary theory. Alfred Russel Wallace was born on 8th January 1823 in the village of Llanbadoc, in Monmouthshire, Wales. Wallace was inspired by the travelling naturalists of the day and decided to begin his exploration career collecting specimens in the Amazon rainforest. He explored the Rio Negra for four years, making notes on the peoples and languages he encountered as well as the geography, flora, and fauna. While travelling, Wallace refined his thoughts about evolution and in 1858 he outlined his theory of natural selection in an article he sent to Charles Darwin. Wallace made a huge contribution to the natural sciences and he will continue to be remembered as one of the key figures in the development of evolutionary theory.

Calli Guerrero-Waite faces a wrenching moral dilemma. Caught in a painful marriage, she sees a new life opening up for her when she has an affair with Jake Sanchez. Ready to divorce her anthropologist husband, circumstances abruptly alter. Conscience calls her one way, love another. The way that Calli and Jake confront the pull of conscience, the dictates of Calli?s powerful husband, the scorn of family and friends, and a concern for her two sons forms the crux of Darwin?s Law.

The Arthur M. Sackler Colloquia of the National Academy of Sciences address scientific topics of broad and current interest, cutting across the boundaries of traditional disciplines. Each year, four or five such colloquia are scheduled, typically two days in length and international in scope. Colloquia are organized by a member of the Academy, often with the assistance of an organizing committee, and feature presentations by leading scientists in the field and discussions with a hundred or more researchers with an interest in the topic. Colloquia presentations are recorded and posted on the National Academy of Sciences Sackler colloquia website and published on CD-ROM. These Colloquia are made possible by a generous gift from Mrs. Jill Sackler, in memory of her husband, Arthur M. Sackler.

An essential new edition of the 19th-century scientific masterpiece that translates Darwin’s Victorian prose into modern English: “Most useful” (Walter Brock, Columbia University). Charles Darwin’s most famous book On the Origin of Species is without question one of the most important books ever written. Yet many students have great difficulty understanding it. While even the grandest works of Victorian English can be a challeng for modern readers, Darwin’s dense scientific prose is especially difficult to navigate. For an era in which Darwin is more talked about than read, doctoral student Daniel Duzdevich offers a clear, modern English rendering of Darwin’s first edition. Neither an abridgement nor a summary, this version might best be described as a translation for contemporary English readers. A monument to reasoned insight, the Origin illustrates the value of extensive reflection, carefully gathered evidence, and sound scientific reasoning. By removing the linguistic barriers to understanding and appreciating the Origin, this edition brings 21st-century readers into closer contact with Darwin’s revolutionary ideas.

When Charles Darwin finished The Origin of Species, he thought that he had explained every clue, but one. Though his theory could explain many facts, Darwin knew that there was a significant event in the history of life that his theory did not explain. During this event, the “Cambrian explosion,” many animals suddenly appeared in the fossil record without apparent ancestors in earlier layers of rock. In Darwin’s Doubt, Stephen C. Meyer tells the story of the mystery surrounding this explosion of animal life—a mystery that has intensified, not only because the expected ancestors of these animals have not been found, but because scientists have learned more about what it takes to construct an animal. During the last half century, biologists have come to appreciate the central importance of biological information—stored in DNA and elsewhere in cells—to building animal forms. Expanding on the compelling case he presented in his last book, Signature in the Cell, Meyer argues that the origin of this information, as well as other mysterious features of the Cambrian event, are best explained by intelligent design, rather than purely undirected evolutionary processes.