Spacecraft, mini-drones and robotic arms: Obama nerds out

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  • President Barack Obama shakes hands with Nathan Copeland during a tour of innovation projects at the White House Frontiers Conference at University of Pittsburgh in Pittsburgh, Thursday, Oct. 13, 2016. Copeland demonstrates how he can control a robotic arm and feel when the robotic hand is touched. (AP Photo/Susan Walsh)

    President Barack Obama shakes hands with Nathan Copeland during a tour of innovation projects at the White House Frontiers Conference at University of Pittsburgh in Pittsburgh, Thursday, Oct. 13, 2016. Copeland demonstrates how he can control a ... robotic arm and feel when the robotic hand is touched. (AP Photo/Susan Walsh) (The Associated Press)

  • President Barack Obama talks with Nathan Copeland, right, during a tour of innovation projects at the White House Frontiers Conference at University of Pittsburgh in Pittsburgh, Thursday, Oct. 13, 2016. Copeland demonstrates how he can control a robotic arm and feel when the robotic hand is touched. (AP Photo/Susan Walsh)

    President Barack Obama talks with Nathan Copeland, right, during a tour of innovation projects at the White House Frontiers Conference at University of Pittsburgh in Pittsburgh, Thursday, Oct. 13, 2016. Copeland demonstrates how he can control a ... robotic arm and feel when the robotic hand is touched. (AP Photo/Susan Walsh) (The Associated Press)

  • President Barack Obama sits in a flight simulator during a tour of innovation projects at the White House Frontiers Conference at University of Pittsburgh in Pittsburgh, Thursday, Oct. 13, 2016. NASA astronaut Dr. Serena Aunon-Chancellor, left, and Boeing Representative Daniel Nelson, right, watch. Obama was operating a spacecraft flight and docking simulator that replicates the training setup that NASA's commercial crew astronauts are using to prepare for future missions to the International Space Station. (AP Photo/Susan Walsh)

    President Barack Obama sits in a flight simulator during a tour of innovation projects at the White House Frontiers Conference at University of Pittsburgh in Pittsburgh, Thursday, Oct. 13, 2016. NASA astronaut Dr. Serena Aunon-Chancellor, left, and ... Boeing Representative Daniel Nelson, right, watch. Obama was operating a spacecraft flight and docking simulator that replicates the training setup that NASA's commercial crew astronauts are using to prepare for future missions to the International Space Station. (AP Photo/Susan Walsh) (The Associated Press)

President Barack Obama has a confession: He's a science geek, a nerd, and he's not apologizing to anyone.

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Obama is speaking at a White House Frontiers Conference in Pittsburgh. The event is intended to showcase innovations in science and technology and federal investments to spur progress.

Obama started with a tour of some nerd-worthy projects: a Boeing space flight simulator, a self-flying drone used for infrastructure inspection and the SpaceX Dragon Spacecraft that carried cargo to the International Space Station.

He says it's "cool stuff."

Obama says he gets riled up when he hears people ignore facts and science, such as politicians who question whether global warming is occurring. He says only with science can the world tackle its toughest challenges in the 21st century.