What beats a family weekend at a national park? Getting $100 knocked off the price tag of that weekend. And that's the Earth Day present being offered today by the North Cascades Institute.

The staff and friends of Grand Canyon National Park will be celebrating their second annual Celebrate Wildlife Day on Saturday, May 2, 2009. The event will include special exhibits and programs, live animal demonstrations and fun for the entire family.

While federal regulations prohibit bear spray in national parks outside of Alaska, park superintendents have the authority to override that ban within their parks, according to officials at Grand Teton National Park.