The National Geographic Magazine, Volume 209, Issues 4-6National Geographic Society., 2006 - Geography |
From inside the book
Results 1-3 of 44
Page 31
... Scientists now argue that saliva is an elaborate substance that defends us against many hostile organisms . As a diagnostic tool , it appears to have breathtaking potential . Mandel started his pioneering research on saliva in the late ...
... Scientists now argue that saliva is an elaborate substance that defends us against many hostile organisms . As a diagnostic tool , it appears to have breathtaking potential . Mandel started his pioneering research on saliva in the late ...
Page 127
... scientists still can't say when an earthquake will happen . They can't even come close . Some of the simplest questions about earth- quakes remain hard to answer . Why do they start ? What makes them stop ? Does a fault tend to slip a ...
... scientists still can't say when an earthquake will happen . They can't even come close . Some of the simplest questions about earth- quakes remain hard to answer . Why do they start ? What makes them stop ? Does a fault tend to slip a ...
Page 136
... scientists realized that these quakes had occurred fairly regularly , roughly every 22 years , and so in the early 1980s the notion arose that there ought to be another Parkfield quake around 1988 . Scientists wired the fault every ...
... scientists realized that these quakes had occurred fairly regularly , roughly every 22 years , and so in the early 1980s the notion arose that there ought to be another Parkfield quake around 1988 . Scientists wired the fault every ...
Contents
Inside Chernobyl 32 Twenty years after a nuclear reactor exploded blanketing | 36 |
Glen Canyon Revealed 64 A sustained drought has shriveled Lake Powell in the Southwest | 72 |
COVER U S soldiers patrol devastated Market Street in San Francisco | 120 |
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