Our journey to Africa spanned 10,000 miles and with a long layover, about 24 hours each way. It also seemed to take us back in time – like the Way Back Machine in the old Rocky and Bullwinkle cartoons of my youth. The parts of Africa we saw – aside from Arusha, Tanzania’s third-largest city into which we flew – are like a place time forgot. There are, of course, some paved main roads, vans and trucks, and we often had access to the Internet, even in very remote areas. But so much seems nearly untouched by modern influence: The vast expanses of ancient trees, unmolested game animals and birds, and virgin landscapes that stretch to the faraway horizon, seem unchanged since prehistoric times. T he Industrial Revolution doesn’t seem to have reached much of the country. T ribes such as the nomadic Maasai retain a culture and customs from millennia ago. Unspoiled nature About 38 percent of Tanzania – 16,000 square miles – is composed of national parks, preserves, marine par...