It was a speech unlike any Peter Harris had ever made. No notes. No podium. No bullet-riddled PowerPoint. Just Harris and the people listening to him talk about how to tackle big issues such as climate change.

Harris was making one of the first 11 TED@UPS talks. Now, generally speaking, UPS workers are known for driving brown trucks and avoiding left turns. They deliver packages, not speeches.

But UPS took on the technology, education and design (TED) talk concept and looked among its hundreds of thousands of workers for the first TED@UPS presenters. They came up with 11 speakers and two performers.

Harris said he redrafted his talk at least 10 times, with countless tweaks to each, and must have practiced it 100 times, including a somewhat tough rehearsal in front of his family.

Other TED presenters included a transgender UPS pilot and a woman who worked for the State Department in Rwanda at the outbreak of that nation's civil war. See what they had to say.