Jun 01, 2006 — When creatures lose organs they once had, such as cave-dwelling fish that lose functional eyes, is this evolution or devolution? Dr. Curt Stager and Martha Foley look for what is gained when something's lost in nature's accounting.  Go to full article

Jul 21, 2005 — Martha Foley and Dr. Curt Stager talk about finding life in space. Will we know it when we see it? One clue to what it might resemble comes from life in extreme environments on Earth.  Go to full article

May 27, 2004 — Since 1959, the Russian geneticist Dmitri Belyaev and his successors have been experimenting in the domestication of a new species, the arctic fox. By breeding for human-friendly behavior, they found that physical traits we associate with domestic animals also developed. Dr. Curt Stager and Martha Foley consider floppy ears and curly tails.  Go to full article

May 29, 2003 — Extinction of a species can influence the survival of others species within the same habitat. Martha Foley and Dr. Curt Stager weigh the possible impact.  Go to full article

Jan 30, 2003 — Is the idea behind evolution to eventually form the "perfect" creature? Martha Foley and Dr. Curt Stager talk about the directions evolution can take.  Go to full article

Jun 27, 2002 — Martha Foley and Dr. Curt Stager discuss sickle cell anemia as a case study in the pros and cons of evolutionary adaptation.  Go to full article

Oct 25, 2001 — A human male and a male chimpanzee have as much in common, genetically, as a man and a woman. Dr. Curt Stager and Martha Foley look at our evolutionary cousins, primates.  Go to full article

Apr 19, 2001 — Bacteria and viruses can adapt with extreme speed to survive exposure to antibiotics and other drugs. Dr. Curt Stager and Martha Foley talk about the genetic changes and rapid evolution known as drug resistance.  Go to full article

Feb 01, 2001 — The simplicity of viruses leads to the question, "Are viruses alive?" Dr Curt Stager and Martha Foley discuss what it takes to be numbered among the living. Disease-causing bacteria pass muster, but viruses may fall a little short.  Go to full article