For the first time in almost a century, North America’s busiest border crossing – between Detroit and Windsor – is expanding. The Gordie Howe International Bridge is finally connected after six years of construction and a slew of delays, cost increases and political woes. The bridge is expected to improve trade between Canada and the U.S., while bolstering Windsor’s economic revitalization.The Globe’s national science reporter, Ivan Semeniuk, joins the show to discuss the bridge’s progress, what its economic effects will be and why the bridge is more than just a physical connection.Questions? Comments? Ideas? Email us at thedecibel@globeandmail.com