Historian Glenn Kimball, fresh from a trip to Egypt, discussed his research there investigating several tombs and sites. He spent time with Zahi Hawass who told him that only 30% of possible excavations of Giza Plateau had been uncovered, and that the "most precious secrets are in the future," waiting to be revealed. One such spot, a new tomb discovered beneath a causeway, is thought to hold items of interest, because it's in a location that has never been looted.
Kimball said that he has established a permanent relationship with Egypt and will be spending a great deal of time there. Impressed by the warmth and compassion of the locals, he noted that "Egypt is a harbor of history," and has an impressive depth of culture extending back 5,000 years.
First hour guest, astronomer David Morrison discussed near-earth asteroids, which he said can either be spotted decades in advance or in contrast just a few days before their arrival. In the case of a large asteroid calculated to hit the Earth, Morrison said we now have the technology to gently nudge the object out of our orbit. A typical asteroid is about 10-12 ft. across, while shooting stars are "only the size of a pea," he said. The biggest asteroid is the size of Texas, he noted, though it is thankfully not in our path.