President Obama addresses the U.N. general assembly, touching on issues including climate change, arms reduction, and the Israeli/Palestinian conflict, and says that the U.S. is committed to “a new era of engagement with the world.” Directly following Mr. Obama’s speech, Libyan leader Muammar Qaddafi takes the floor.

Earlier this morning, President Obama spoke with Israeli Prime Minister Benjamin Netanyahu and Palestinian Authority President Mahmoud Abbas in a meeting which a senior administration source called “businesslike.” Expressing his impatience, Obama told the Israeli and Palestinian leaders, “We’ve had enough of talks….it’s time to move forward.”

Residents of Sydney, Australia awake to an eerie orange sky as the worst dust storms in at least 70 years engulf the city and move north towards Queensland.

Saudi Arabia’s King Abdullah University of Science and Technology officially opens. The university, which boasts the world’s 14th fastest supercomputer and one of the world’s largest endowments, could also become a cultural battleground in this conservative country — the school is co-ed, and female students will mix freely with males and will not be required to wear veils.