Unit 1
Text A:Genetically Modified Foods——Feed the World?
Text B:Genetically Modified Foods:Are 7hey Safe?
Unit 2
Text A:The Biology of Skin Color:Black and white
Text B:Immortal Avatars:Back up Your Brain,Never Die
Unit 3
Text A:Can Dirt Do a Little Good?
Text B:Urban Air Pollutants Can Damage iQs before Baby’S First Breath
Unit 4
Text A:IsTime 7ravel Possible?
Text B:Building a 7ime Machine
Unit 5
Text A:The End of E—mail Age
Text B:E—mail Gets an Instant Makeover
Unit 6
Text A:Are Cell Phones Safe?
Text B:want tO Know Your Disease Risk?Check Your Exposome
Unit 7
Text A:Seeing the Earth for Its Faults
Text B:Can Geothermal Energy Pick up Real Steam?
Unit 8
Text A:why We Are Fat?
Text B:More Protein,Less Refined Starch Important for Dieting
Unit 9
Text B : Is Stephen Hawking Right about Aliens?
Unit 10
Text A:Video Gamers Can Control Dreams,Study Suggests
Text B:Dream States:A Peek into Consciousness
Unit 11
Text A:For Mobile Touch Technology,lt's Only the Beginning
Text B:It 's a Smart World
Unit 12
Text A:Fact or Fiction:The Days (and Nights) Are Getting Longer
Text B:The Primal and Future Moon
References