{"cache_age":"3600","width":"920","description":"Only 5% of Canada's native grasslands remain, and they are filled with North America's iconic species: wolves, grizzlies, bighorn sheep, moose, bison, eagles and more. Park managers set controlled fires to attract grazers like elk that eat invasive species and keep the prairies from being overrun. But elk attract wolves, and wolves scare away elk. Help Earthwatch scientists better understand these chain reactions to ensure that a healthy, balanced ecosystem is maintained.","html":"<iframe src='https:\/\/www.globalgiving.org\/dy\/v2\/oembed\/?format=html&url=https%3A%2F%2Fwww.globalgiving.org%2Fprojects%2Fprotecting-wolves-in-canada-with-earthwatch%2F' style='width:920px;height:613px;border:0;'><\/iframe>","type":"rich","title":"Restoring Fire, Wolves, and Elk in the Rockies on GlobalGiving","thumbnail_url":"https:\/\/www.globalgiving.org\/pfil\/21597\/pict_large.jpg","version":"1.0","height":"613"}