'(<a href="http://www.j-archive.com/media/2011-01-20_DJ_11.wmv">Lindblad and <i>National Geographic</i> naturalist Tom Ritchie delivers the clue from Antarctica.</a>)  The recent increase in gentoo penguin numbers may be due to decreased sea ice coverage caused by this phenomenon of rising average air temperatures'
global warming
PENGUINS: The recent increase in gentoo penguin numbers may be due to decreased sea ice coverage caused by this phenomenon of rising average air temperatures
The recent increase in gentoo penguin numbers may be due to decreased sea ice coverage caused by this phenomenon of rising average air temperatures
The recent increase in gentoo penguin numbers may be due to decreased sea ice coverage caused by this phenomenon of rising average air temperatures
PENGUINS
global warming
PENGUINS