The airports in Nigeria seem to not understand the purpose of fences. A herd of cattle wandered on to a main runway at Port Harcourt just as an Air France jet was landing (bad week for Air France, too.) Seven cows were killed, the jet skidded off the runway, no one was injured, but a lot of people are very embarrassed.
In the San Joaquin Valley in California it seems cow flatulence and bad breath are a more serious source of pollution than automobiles. (link) "Every year, the average dairy cow produces 19.3 pounds of gases, called volatile organic compounds, the San Joaquin Valley Air Pollution Control District said. Those gases react with other pollutants to form ground-level ozone, or smog. With 2.5 million dairy cows Â roughly one of every five in the country Â emissions of almost 20 pounds per cow mean that cattle in the San Joaquin Valley produce more organic compounds than are generated by either cars or trucks or pesticides, the air district said. The finding will serve as the basis for strict air-quality regulations on the region's booming dairy industry."
I don't know whether to laugh or cry.