Talk of The Nation

The holiday season is one of the busiest travel times of the year. However, we seldom think about the transit workers — bus drivers, train operators, air traffic controllers and tow truck operators — who help us reach our destinations.

For most of us, riding from floor to floor in an elevator is a completely mundane process. Lee Gray, an associate dean at the University of North Carolina at Charlotte, is known as the Elevator Guy. He spends a lot of his time researching the history of elevators and why we behave so oddly in the big metal boxes.

Transcript

JOHN DONVAN, HOST:

Photographer Colin Legg makes time-lapse movies of celestial scenes, from auroras to eclipses. Photographing mostly in remote parts of Australia, where human-made light doesn't compete with starlight, Legg describes some of the challenges of this type of photography: from babysitting cameras for days and nights on end to running electronics in the backcountry.

The Audubon's 113th Christmas Bird Count is underway, and thousands of volunteers are taking part this year. Ornithologist David Bonter, and Gary Langham, Audubon's chief scientist, share tips on which species to look out for, and how even birding beginners can get involved.