Part Ⅰ Energy Resources 能源 3
1．Biofuel:the Burning Question 3
2．Dutch City Kept Warm by Hot-water Mines 7
3．Cost-saving Fuel Systems in Pipeline 9
4．The Enduring Allure of'Clean Coal' 12
5．U.S.-bound Flight from New Zealand to Showcase Ways to Save Time and Fuel 14
6．A Gift From the 70s:Energy Lessons 17
Part Ⅱ Biological Science 生物科技 23
7．Researchers Find Easier Way to Make Stem Cells 23
8．You've Got to Be Flexible to Live in Complex Societies 25
9．Journey to the Center of the Cell 27
10．The Sociable Brain 30
11．A New Reason to Frown 32
Part Ⅲ Information Science 信息科学 39
12．Justifying the Cost of an iPhone 39
13．Internet Companies Embrace Human Rights Guidelines 42
14．Cyber Identity Thieves Can Get Anyone 45
15．Reading This Will Change Your Brain 48
16．A No-Paper Newspaper 51
17．Without Wi-Fi,Mini-computers Not as Magical 54
18．Toys Combine Reality and Cyber Worlds 57
19．High-speed Internet Coming to Africa 61
20．Broadband in the Sky:Surf,but Don't Call 64
21．How Many Web Services Can One Person Use? 68
22．Web Site's Formula for Success:TV Content with Fewer Ads 70
23．A·M·D.'s Results Show Improvement 75
Part Ⅳ Health and Medicare 健康医疗 81
24．The Trouble with'Healthy'Kid Foods 81
25．Placebos Don't Make Ethicists Feel Better 84
26．Gastric Bypass Surgery Less Helpful for Diabetics 87
27．Nerves Tangle,and Back Pain Becomes a Toothache 91
28．12 Diseases That Altered History 95
29．Turning Out the Lights 99
30．Choosy Mothers Choose Caesareans 103
31．HIV Epidemic in U.S.a Crisis,Health Officials Say 106
32．Kefirs Nutritious,but Larger Health Claims Are on Shakier Ground 109
33．Kids Aren't Getting Enough Vitamin D 112
34．Cheaper Drug Prevents H.I.V.in Newborns,Study Shows 115
35．Vitamin C May Interfere with Cancer Treatment 117
36．Concerns about Chemical in Plastics 119
37．Pediatricians:Kids from Newborns to Teens Should Get Double Recommended Amount of Vitamin D 122
38．Health Officials Fear Spread of Lung-destroying Pneumonia 125
39．Speaking without Sound 129
Part Ⅴ Environmental Protection 环境保护 133
40．A Last Warning on Global Warming 133
41．Is Global Warming Worsening Hurricanes? 135
42．Warming Waters Driving Arctic Ice Retreat 138
43．Beyond Carbon:Scientists Worry about Nitrogen's Effects 141
44．Arctic Ocean Ice Retreats Less than Last Year 145
45．Federal Inpuiry Could Delay Clean-trucks Program at Ports 147
46．Gas Guzzlers 150
47．Study:Smog Chops 2 Months off Mexicans'Lives 153
48．Will the Environment Lose Out to the Economy? 156
49．The Bad News about Green Architecture 160
50．State Warms to Greenhouse Gas Emissions Plan 165
51．Sharing the Catch Is Good for Fishermen and Fish-Study Shows 168
52．10 Ways Global Warming Could Hurt Your Health 172
53．Potential Environmental Risks Aren't Part of Chemical Engineers'Training 175
Part Ⅵ Astronomy and Geography 天文地理 181
54．New Mercury Images Show Volcanoes,Magnetic Field,More 181
55．A Maybe Planet,Orbiting Its Maybe Sun 184
56．Like a Rolling Sun? 186
Part Ⅶ Natural Science 自然科学 191
57．Giant"Sea Monster"Fossil Discovered in Arctic 191
58．How Brachiosaurs Got So Huge 194
59．A California Frog May be about to Get Room to Stretch its Red Legs 197
60．Building Faux Habitat to Lure the Cactus Wren 199
61．Dinosaur Graveyard Found in Southeast Utah 203
62．Does This Explain Muskrat Love? 206
63．Alaska Beluga Whales Put on Endangered List 210
64．Plants Make Their Own Version of Aspirin,Researchers Find 213
65．Full Moon Makes Birds Extra Energetic 215
66．Near New York Harbor,the Song of Whales 218
67．Dogs Can'Catch'Yawns from Humans,Study Finds 220
68．Mysteries of Memory 223
69．Fingerprint Test Tells What a Person Has Touched 226
70．How Did Life on Earth Get Started? 229
Part Ⅷ Life and Work 生活与工作 235
71．A Biological Clock for Dads Too 235
72．The Science of Happiness 238
73．Nine Ways to Avoid Household Toxins 243
74．Signs of a Long Life 247
75．Would You Like Those Headphones Leaded or Unleaded? 251
76．Tough-times Challenge:Keeping Workers Happy 254
77．Low-sodium Products Are on the Rise 259
78．Intuition and Math:A Powerful Correlation 263
79．Instead of Eating to Diet,They're Eating to Enjoy 267
80．The Car of the Future 271
81．Cold and Lonely Has a Scientific Basis 274
82．Surfing the Internet Boosts Aging Brains 276
83．Dread Makes Memories Stronger 278
84．Love and Infidelity:How Our Brains Keep Us from Straying 281
85．Love,Sex and the Changing Landscape of Infidelity 284