1.  Bob has always touted solo travel.

2.  Both challenging and stimulating, solo travel can turn a vacation into a great growth experience.

3.  But the good points of solo travel vastly outweigh the complications and dangers, she said.

4.  Solo travel is nearly impossible for non-Farsi-speakers.

5.  Those who have tried it have discovered the pleasure of their own company and the independence and freedom that solo travel offers.

6.  After two months of solo travel, Russian explorer Fyodor Konyukhov reached the South Pole on skis, his manager said Monday.