The summer melt of Arctic ice provides opportunities for millions of animals, but grave dangers for others, including polar bears.
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Every summer in the seas of Alaska, humpback whales, sea lions and killer whales depend on an explosion of plant life, the plankton bloom; it transforms these seas into the richest on Earth, but these animals may not survive to enjoy the great feast.
The great flood in the Okavango turns 4,000 square miles of arid plains into a wetland, drawing in millions of animals including elephants and hippos.
A look at the sardine run, which happens each winter along the South African coast, and the predators that wait for them.
The summer melt of Arctic ice provides opportunities for millions of animals, but grave dangers for others, including polar bears.
The great flood in the Okavango turns 4,000 square miles of arid plains into a wetland, drawing in millions of animals including elephants and hippos.
The summer melt of Arctic ice provides opportunities for millions of animals, but grave dangers for others, including polar bears.
A look at the sardine run, which happens each winter along the South African coast, and the predators that wait for them.
