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COVER Clouds pass over Kenya's Lake Magadi, where geologists are
6 M1 |! ?1 i" ]drilling a core to gather detailed climate data from the ancient lake bed. Data
. J t% L8 e6 g' D: son past climates are vital for researchers seeking to understand how
( c: X( T# k/ G! y1 b, ~) y# fanthropogenic climate change will affect Earth?s ecosystems and species, ) ~& @* j4 B, H8 F5 T* B7 q
including its effects on infectious diseases and food security. See the special 4 Z* A' I, ^' q
section beginning on page 472. Photo:
0 {. s( Q5 @8 S& O/ ^, l1 C. G) r? Martin Harvey/Alamy
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