The super tug of the future not leaving a mark at SFO
In its effort to go fully electric over the next couple decades, United Airlines unveiled the service vehicle of the future: an all-electric super tug that can lift and haul a 400,000-pound jet.
This major U.S. lake will soon get an unbelievably high-tech ferry that glides across water — here's what you need to know
Lake Tahoe is one the United States' top outdoor destinations, which also means traffic from cars and the pollution that ...