Grass-roots groups are mobilizing around the world, circulating petitions and setting up Web sites, like savetheserengeti.org.

The above is from the article and has been posted earlier in this thread.

I've also written to
ALOYCE K NZUKI, PhD
TANZANIA TOURIST BOARD
IPS BUILDING, THIRD FLOOR
P.O. BOX 2485
DAR ES SALAM, TANZANIA

The response mentioned "due consideration" will be given to the highway.