On this date in 1976 the Viking 2 spacecraft lands at Utopia Planitia on Mars takes the first close-up, color photos of the planet's surface.

Tape yourself teaching. Listen to the tape several times. Keep a record of what students you call on, how long you wait for them to respond, and the types of questions you ask.

Can't boot from your Macintosh Hard Drive? Try booting up while holding down the command-option- shift-delete keys. With a system CD in the CD ROM drive this will cause the system to boot from the CD.

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