{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

polar bear paper

polar bear paper - Scott Choe English165 Polar...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Scott Choe 09/20/07 English165 Polar Bears “Two-thirds of the world’s polar bears will be killed off by 2050” (1). The grim statistic introducing John Heilprin’s article immediately perks our attention and introduces us to the Arctic situation along with the resulting challenges facing polar bears. The surprising fact is that this upcoming holocaust is not a result of human hunting trips or a deadly virus, but from changes in the atmosphere affecting their environment. Every polar bear in Alaska and Russia will lose its home, and “42 percent of the Arctic range they need to live” is estimated to disappear by that time (1). Melting ice poses a huge danger to polar bears because they “depend on sea ice as a platform for hunting seals,” much like bees depend on flowers for pollen and nutrients (1). Most of these changes can be attributed to a reduction in the amount of ice, according to the article, in which it states: “83 percent of the scientific variables affecting the polar bear’s fate was tied to changes in sea ice” (1). At the date the article was written, levels of Arctic sea ice were the lowest on record. However, there does not seem to be a possibility of reversing the current trends; even if greenhouses gases fall to low levels, it would make no discernable difference in the pattern for at least the next few decades. US and Canadian scientists came to the article’s conclusions after half a year of studies linking the health of polar bears and the Arctic sea ice around them. The US Geological Survey released nine surveys intended to influence Interior Secretary Dirk Kempthorne’s decision to possibly add polar bears to the endangered species list.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
However, the USGS did not release estimates of polar bear population in the future.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}