On Apr. 2, the autism science and advocacy organization Autism Speaks celebrates World Autism Awareness Day with the launch of its third annual Light It Up Blue (LIUB) campaign, a global initiative to raise funds and increase awareness of autism as a growing public health crisis. More than 3,000 structures in over 220 U.S. cities and 28 countries will be illuminated in blue and joining Autism Speaks to shine a bright light on autism.
<a href=\"http://bit.ly/blue-for-autism-flickr\">See more photos from Light It Up Blue on Flickr</a>\n<br />\n<br />\nThe Palacio de Bellas Artes in Mexico City, Mexico. (Photo courtesy of Autism Speaks)
The Empire State Building in New York City. (Photo by Whitney Cox/Autism Speaks)
The Peter B. Lewis Building at Case Western Reserve in Cleveland, OH. (Photo courtesy of Autism Speaks)
The Wrigley Building in Chicago, IL. (Photo courtesy of Autism Speaks)
Great Buddha of Hyogo in Kobe, Japan. (Photo by Buddhika Weerasinghe/Getty Images for Autism Speaks)