Unit One Astrophysics Text A In Search for Alien Life， Researchers Enlist Human Minds Text B Warp Drive Unit Two Climatology Text A The Weekend of 100 Tornadoes: Are Killer Storms Being Fueled by Climate Change? Text B Experts Argue Global Warming's Impact on Sandy's Unusual Path to N.J. Unit Three Renewable Energy Text A Is the Future of Clean Energy a Pond of Algae in Every Backyard? Text B Sweet Hydrogen: How Sugar Could Help Satisfy the World's Energy Needs Unit Four Chemistry Text A Plant-Powered Plastics Text B Full-Body Taste Unit Five Medical Science Text A Chemo in Pregnancy Does Not Necessarily Harm Baby， Says Study Text B Drug Trial Gives Hope of Longer Life to Women Fighting Ovarian Cancer Unit Six Dynamics Text A Solar-Powered Travel: Opening Up New Routes Across Sky， Sea and Land Text B Hybrids Under the Hood Unit Seven Paleontology Text A Life in the Sea Found Its Fate in a Paroxysm of Extinction Text B An Underground Fossil Forest Offers Clueson Climate Change Unit Eight Nanotechnology Text A Fine-tuning Nanotech to Target Cancer Text B Nanotechnology Can Launch a New Age ofSpace Exploration Unit Nine Civil Engineering Text A Prefabs Sprout as Britain Embraces Timber-Frame Housing Text B A Bridge Built to Sway When the Earth Shakes Unit Ten Software Engineering Text A Microsoft Windows 8 Consumer Preview-Review Text B Katrina Changed Everything: New Software Predicts How Water Will Spread Appendix Key to Exercises
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