PBS6 年
Biogeography: Polar Bears and Penguins:
Why does the Arctic have polar bears and Antarctica penguins? These patterns impressed Darwin deeply. To him, they argued that species arose in single centers by descent with modification from ...
PBS1 年
Biogeography: Polar Bears and Penguins:
Why does the Arctic have polar bears and Antarctica penguins? These patterns impressed Darwin deeply. To him, they argued that species arose in single centers by descent with modification from ...
Panda1 年
Polar bears and penguins 'just tip of climate change iceberg'
“The penguins may feel it first, but the rest of us won’t be far behind.” The warming of the Antarctic is not yet as acute as the Arctic, but it is yet a further indication that the meltdown of our ...
Center for Biological Diversity2 年
SAVING PENGUINS
Like the polar bear on the opposite pole, the emperor penguin endures almost unfathomable hardships to breed and nurture each new generation — fasting for months through the planet's harshest winter ...
Center for Biological Diversity6 年
SAVING PENGUINS
Like the polar bear on the opposite pole, the emperor penguin endures almost unfathomable hardships to breed and nurture each new generation — fasting for months through the planet's harshest winter ...