On the horizon dust rises. There’s a rumbling sound like far-off thunder. Now you can see a dark, moving tide. The shapes become more distinct, the noise becomes a crescendo and the ground shakes beneath millions of drumming hooves. It’s one of the most spectacular sights on earth, the Great Migration. Every spring two million wildebeest, zebra, gazelles and other animals head north from Tanzania to Kenya in search of greener grasslands. Lions and hyenas run after the huge herds; vultures hover overhead. The migration across the Serengeti-Mara is one of the world’s natural wonders. American hunter Stewart Edward White was the first white man to discover the area. He set out from Nairobi in 1913. He recalls his journey as he pushed south. "We walked for miles over burnt-out country. Then I saw the green trees of the river, walked two miles (3.2 kilometers) more and found myself in paradise." This paradise is now under threat. Tanzania’s president Jakaya Kikwete made an election pledge to build a national highway through the Serengeti park. The road would divide the migration route. It’s a classic dilemma, economic development versus conservation. The Serengeti highway will link Musoma, on the banks of Lake Victoria, to Arusha. Engineers will lay a road across the migration rout of giant heards of wildebeest. Another politician has claimed environmentalists are more interested in animals than in human beings. He says the road will bring benefits to the Maasai people who live in poverty on the plains east of the Serengeti national park. However scientists have claimed that politicians are hijacking a unique ecosystem. They warn humans would introduce domestic diseases and the new road would provide an escape route for poachers. Environmentalists have launched Internet and media campaigns and 27 scientists have co-signed an article in the Nature magazine objecting to the highway project. Maasai tribes: Maasai people gather at Oltukai, northern Tanzania, to show their support for the construction of the route through the Serengeti on account of its potential trade benefits. Poverty has marginalized the local communities. The Maasai are a semi-nomadic people located in Kenya and northern Tanzania. Due to their unique dress and customs, they are among the most well-known of Africa’s ethnic groups. Recently, the British 0xfam (Oxford Committee for Famine Relief) has claimed that the lifestyle of the Maasai should be embraced as a response to climate change because of their ability to farm in deserts. But while the Maasai run cattle farms, they also invade the habitats of Kenya’s endangered animals. The author of this article holds a/an ______ attitude to the construction of the national highway through the Serengeti Park.