Charles Darwin's reputation: how it changed during the twentieth-century and how it may change again.

Charles Darwin died in 1882. During the twentieth century his reputation varied through time, as the scientific foundation of evolutionary theory changed. Beginning the century as an intellectual hero, he soon became a virtual footnote as experimental approaches to evolution began to develop. As the Modern Synthesis developed his reputation began to rise again until eventually he was identified as a founding father of the Modern Synthesis itself. In the meantime, developmental approaches to evolution began to challenge certain aspects of the Modern Synthesis. Synthesis authors attempted to refute the relevance of development by methodological arguments, some of them indirectly credited to Darwin. By the end of the century, molecular genetics had given new life to development approaches to evolution, now called evo devo. This must be seen as a refutation of the aforesaid methodological arguments of the Modern Synthesis advocates. By the way, we can also see now how the historiography that credited Darwin with the Synthesis was in error. In conclusion, one more historical revision is suggested.

The Urey instrument: an advanced in situ organic and oxidant detector for Mars exploration.

The Urey organic and oxidant detector consists of a suite of instruments designed to search for several classes of organic molecules in the martian regolith and ascertain whether these compounds were produced by biotic or abiotic processes using chirality measurements. These experiments will also determine the chemical stability of organic molecules within the host regolith based on the presence and chemical reactivity of surface and atmospheric oxidants. Urey has been selected for the Pasteur payload on the European Space Agency's (ESA's) upcoming 2013 ExoMars rover mission. The diverse and effective capabilities of Urey make it an integral part of the payload and will help to achieve a large portion of the mission's primary scientific objective: "to search for signs of past and present life on Mars." This instrument is named in honor of Harold Urey for his seminal contributions to the fields of cosmochemistry and the origin of life.

On a bioethical challenge to disability rights.

Tensions exist between the disability rights movement and the work of many bioethicists. These reveal themselves in a major recent book on bioethics and genetics, From Chance to Choice: Genetics and Justice. This book defends certain genetic policies against criticisms from disability rights advocates, in part by arguing that it is possible to accept both the genetic policies and the rights of people with impairments. However, a close reading of the book reveals a series of direct moral criticisms of the disability rights movement. The criticisms go beyond a defense of genetic policies from the criticisms of disability rights advocates. The disability rights movement is said not to have the same moral legitimacy as other civil rights movements, such as those for women or "racial" minorities. This paper documents, and in some cases shows the flaws within, these challenges to the disability rights movement.