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COVER Clouds pass over Kenya's Lake Magadi, where geologists are 7 {) s7 H4 u4 L' U3 F P
drilling a core to gather detailed climate data from the ancient lake bed. Data
?6 M I. P5 a7 j/ T+ @ z. V! P, ion past climates are vital for researchers seeking to understand how
: I6 v" ~- ]" J$ zanthropogenic climate change will affect Earth?s ecosystems and species,
/ i. R/ t& Z, @7 |" D! F: Hincluding its effects on infectious diseases and food security. See the special
) F5 T3 [. u7 \, I& wsection beginning on page 472. Photo: ) }% Q' c4 A& n) s$ `# R% d
? Martin Harvey/Alamy 8 g$ y. |/ y# a* H
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