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Unit One Chilean Earthquake May Have Shortened Earth Days
Timed Reading£º Can Toads Predict Earthquakes?
Unit Two Is 4G Better Than 3G?
Timed Reading£º Top 5 Unexpected Ways You'll Be Using Your Smart Phone
Unit Three Could Computers and Robots Become Conscious?
Timed Reading£º Will Artificial Intelligence Invade Second Life?
Unit Four Vuvuzela-SA Football's Beautiful Noise
Timed Reading£º Zakumi£º Spirit of South Africa 2010
Unit Five Discarded Plastic Bags and Other Debris Threaten Marine Life, Experts Say
Timed Reading£º Plastic Bag--On Its Way Out
Unit Six Avatar£º The Psychedelic Worldview and the 3D Experience
Timed Reading£º Avatar and the World of Shamanism
Unit Seven Defending the USA Pavilion
Timed Reading£º The Pavilion Wars
Unit Eight Why Would a Trained Orea Kill a Human?
Timed Reading£º Lost Leviathans£º Hunting the World's Missing Whales
Unit Nine Where Will the U.S. Get Its Electricity in 2034?
Timed Reading£º Scientists Explore How the Humble Leaf Could Power the Planet
Unit Ten Avatar£º The Real-Life Science Behind the Fantasy
Timed Reading£º Echoes of Avatar£º Is a Tribe in India the Real-Life Na ' vi?
Unit Eleven Vatican Seeks Signs of Alien Life
Timed Reading£º Alien Life? Astronomers Predict Contact by 2025
Unit Twelve Some Mistakes Your Doctor May Be Making
Timed Reading£º Recipes to Set Teenagers on a Healthy Path
Unit Thirteen The Deadliest Snake in the World--the Black Mamba
Timed Reading£º Origin of Snake Fangs
Unit Fourteen Climate Change Likely Caused Polar Bear to Evolve Quickly
Timed Reading£º Climate Change Is Happening£» Effects Will Be Severe, Now What Will It Cost to Fix It?
Unit Fifteen The Mystery of Crop Circles
Timed Reading£º Crop Circles£º Artworks or Alien Signs?
Unit Sixteen Fueling the Anger of Doctors
Timed Reading£º Doctors Offer Thoughts on Cutting Health Care Costs
Unit Seventeen The Trillion-Dollar Question Is£º Who Will Now Lead the Climate Battle?
Timed Reading£º Is Combating Climate Change Worth the Cost?
Unit Eighteen Lost? Evidence that Sense of Direction Is Innate
Timed Reading£º The Neuroscience of Distance and Desire
Unit Nineteen Global Warming
Timed Reading£º Among Weathercasters, Doubt on Warming
Answer Keys
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