May 30, 2011 2:34 pm Healthy Parks; Healthy People NBC Bay Area reporter Doug McConnell shows us why taking in the wonder of Mother Nature can have long lasting health benefits. US & World Videos 1:43 Traces of bird flu virus found in 1 in 5 samples of pasteurized milk, FDA says 2:42 Mother, surrogate celebrate a perfect ending to their long journey 1:12 Watch: Why vaccines are contributing to improved public health 1:53 The Helix School in San Rafael growing with the community 3:33 Bay Area sees slight improvement in air quality, annual report shows