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On the Cover

November-December 2009 Volume 97, Number 6

Found in caves and wooded canyons of the Sierra Nevada in California, this Ortholasma harvestman is an unnamed and undescribed new species, less than a centimeter in length. ...

FEATURE ARTICLES

Spitzer’s Cold Look at Space

Michael Werner

To get a clear view of infrared emissions from celestial objects, the Spitzer Space Telescope has been cryogenically cooled—and what sights it has seen

Harvestmen *

William Shear

Opiliones—which include daddy-long-legs—are as exotic as they are familiar

The Other Climate Threat: Transportation *

Andreas Schäfer, Henry D. Jacoby, John B. Heywood, Ian A. Waitz

A global travel surge is inevitable, but runaway growth of mobility-related CO₂ emissions is not

Going with the Floe? *

Stephanie Pfirman, Bruno Tremblay, Charles Fowler

An analysis of luck versus skill in the epic polar expeditions of Fridtjof Nansen and Sir Ernest Shackleton

* access restricted to members and subscribers

SCIENTISTS’ BOOKSHELF

A review of The Strangest Man: The Hidden Life of Paul Dirac, Mystic of the Atom, by Graham Farmelo. In Farmelo’s hands, the story of Dirac’s contributions to modern theoretical physics is both gripping and illuminating, says Gordin; the author captures the beauty and ambition of Dirac’s view of physics and sorts through the mythology that has grown up around him as a result of the many anecdotes that circulate about his oddity

See all book reviews for this issue.