Experts Tie Pigeon Dung, Bridge Collapse
Pigeons gather under the Robert Street bridge Friday, Aug. 17, 2007 in St. Paul, Minn., where they set up nests, offering shelter from the skies and predators above. Pigeons, a problem familiar to bridge inspectors everywhere, produce slightly acidic dung that can dissolve things like concrete and cause rusting on steel bridge beams. Pigeon dung is one of the things inspectors are looking at in the Interstate 35 bridge collapse in Minneapolis. (AP Photo/Jim Mone)
Content from The Associated Press expires 15 days after original publication date. For more information about The Associated Press, please visit www.ap.org .
» Next Article in General Science - Other: Shocks and Stress Tests

Rating: 4.1
Bookmark
Save as PDF
Print
Email
Blog It
Stumble It!


PhysOrg Forum
Video
Editorials
Free Magazines
Free White Papers
Newsletter
Advanced Search
Goto Archive
Suggest a story idea
Send feedback