Ranchers' memories and parasite description

Oil prices came close to hitting $120 a barrel yesterday. This morning, they're hovering around $100 a barrel. Gas prices are also up 27 cents in a week, a price increase that'll pinch consumers and could dent consumer spending. In response to the spike in oil prices, some nations are discussing releasing oil reserves from their stockpiles. Then, we'll head to the Texas-Mexico border, where a parasitic fly poses a threat to the cattle industry.