President Obama's commencement speeches seem to be his real State of the Union addresses. On May 5, he told Ohio State students that they were graduating into a "healing" economy.
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But last year, he reminded Air Force Academy graduates that they were the first class in nearly a decade to graduate with "no Americans fighting in Iraq."
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Throughout all his graduation speeches, Obama sounds themes of shared responsibility, as when he told University of Michigan students in 2010 that "government is us."
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President Obama's commencement speeches often seem more about the big-picture state of the union than do his State of the Union addresses. On May 5, he told Ohio State students that they were graduating into a "healing" economy.
The PBF Energy refinery in Paulsboro, N.J., uses toxic chemicals such as hydrofluoric acid. Rather than using "inherently safer" design methods, the industry says, other safety measures are taken to prevent accidents like the one in West, Texas.
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In this photograph from 2009, children play in front of the Union Carbide factory in Bhopal, India. Twenty-five years prior, in 1984, it was the site of a deadly gas leak that killed thousands of people.
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The West Fertilizer Co., shown from the air, lies in ruins after an explosion that killed 15 people, injured more than 150 and damaged houses and buildings for blocks in every direction.
You might think that everything would have changed for the chemicals industry on April 16, 1947. That was the day of the Texas City Disaster, the worst industrial accident in U.S. history. A ship loaded with ammonium nitrate — the same chemical that appears to have caused the disaster last month in West, Texas — exploded. The ship sparked a chain reaction of blasts at chemical facilities onshore, creating what a newsreel at the time called "a holocaust that baffles description."