Obama: All weather events affected by warming planet

President Obama used the 93 degree temperature in Washington, D.C., on Tuesday to argue the climate is changing.

“In a world that's warmer than it used to be, all weather events are affected by the warming planet,” Obama said before giving a speech on his proposals to limit climate change.

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Obama spoke outside at Georgetown University on a sweltering summer day in D.C.

Before delivering the address, he urged the crowd before to get comfortable.

“My first announcement today is that you should all take off your jackets,” Obama said, before taking of his own before the Georgetown crowd.

When attendees starting cat-calling and erupting in a chorus of “Wooooo!,” the president responded, “It's not that sexy.”

Obama then moved quickly to the topic at hand, calling 2012 the warmest year on record.

As he gave his speech, Obama frequently wiped sweat from his brow.

In a 49-minute address, Obama also responded to those who don't buy into the climate change argument or the need to invest an all-of-the-above approach.

"We don't have time for a meeting with the flat-Earth Society," Obama said.

Obama used the "flat-Earth Society" line last year during a speech where he bashed Republican candidates for their dismissive views on energy.

"If some of these folks were around when Columbus set sail," he said the speech last year in Maryland. "They must have been founding members of the flat-Earth Society — they would not have believed that the world was round."