NewsHour
The NewsHour with Jim Lehrer, August 27, 2003
Interviewd on PBS's NewsHour with Jim Lehrer regarding the 2003 close encounter with Mars.
View the streaming video, audio, or transcript of this interview at the Online NewsHour.
The NewsHour with Jim Lehrer, January 31, 2007
Interviewed on PBS's NewsHour with Jim Lehrer regarding the International Astronomical Union's debate on Pluto's planethood.
View the streaming video of this interview at the Online NewsHour.
