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Some birds depend on a tiny African lake for food and water. But they must look out for the crocodiles that lie in wait.
Wildebeests in the millions make their annual migration through East Africa.
Meet a lizard that can walk, er, run on water.
We received over 12,000 entries, and over 28,000 votes were cast. Find out who takes home the Grand Prize!
Eighteen percent of the world's population can't get safe drinking water. Test your water knowledge.