>> great stuff, crift. coming up after the -- crystal. coming up after the break.eal reporting that brings you the world. giving you a real global perspective like no other can. real reporting from around the world. this is what we do. al jazeera america. ♪ ♪ ♪ >> hey guys welcome back to "techknow" i'm phil torres joined by lindsay, kosta and crystal. guys i got do meet the most innovative archaeologists of our time. she's using one of these, a satellite to look back into our history doing things as incredible as mapping out ancient egypt. let's go in. to help unearth secrets of the ancient past we found a scientist who looks down from space into the future. sarah is a pioneering archaeologist. she was the first to map egypt's lost city of tanis. a city that hasn't been seen in 3,000 years. she then used the same technology to discover over 300 settlements. >> there are people out there who see you guys digging around in the dirt and wonder why. >> there are so many things we can learn from people in the past, but the reality is we're the same people that built th

>> great stuff, crift. coming up after the -- crystal. coming up after the break.ou know the best way to look into your past is up in the sky. i'll show you that after the break. is our economy insecurity now at the mercy of these machines? >> humans aren't able to receive information in that timeframe. >> we're looking at the risks, rewards, and dangers of high frequency trading >> there are no rules or regulations >> all next week on the new expanded real money with ali velshi helping you balance your finances and your life. now an hour, starting at 7 eastern / 4 pacific only on al jazeera america >> the death toll could be much higher than anyone known. >> posing as a buyer... >> ...people ready then... >> mr. president >> who should answer for those people ♪ ♪ >> hey guys welcome back to "techknow" i'm phil torres joined by lindsay, kosta and crystal. guys i got do meet the most innovative archaeologists of our time. she's using one of these, a satellite to look back into our history doing things as incredible as mapping out ancient egypt. let's go in. to help