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Few organizations solve as many impossible problems as NASA's Jet Propulsion Laboratory, and nobody knows more about leading rocket scientists to unlikely breakthroughs than Adam Steltzner. As the phase lead and development manager for EDL (entry, descent, and landing) of the Curiosity rover to Mars, Steltzner spearheaded the creation of one of engineering's wackiest kluges - the sky crane, which allowed the heaviest rover in the history of space exploration to land on Mars unscathed.

The story of the American Civil War is not complete without examining the extraordinary and influential lives of Jessie Frémont, Nelly McClellan, Ellen Sherman, and Julia Grant, the wives of Abraham Lincoln's top generals. They were their husbands' closest confidantes and had a profound impact on the generals' ambitions and actions. Most important, the women's own attitudes toward and relationships with Lincoln had major historical significance.