January 28, 1896: The first speeding fine is handed out to British motorist Walter Arnold of East Peckham in Kent, when he was caught doing 8 mph in a 2 mph built up zone. He was fined a shilling.
January 29, 1958: The Boston Herald prints a letter from Olga Owens Huckins claiming that the pesticide DDT is dangerous. Huckins was a friend of Rachel Carson, to whom she wrote a letter prompting Carson to write Silent Spring, an early call for modern environmentalism. Carson's research and data led her to conclude that pesticides built up in crops, transferred to birds and other animals and was responsible for poisoning fauna. Silent Spring asks important questions about balancing industrial and agricultural needs, progress, the protection of the environment and the quality of life. 
January 29, 1978: Sweden becomes the first country to regulate the use of aerosols in order to halt the destruction of the ozone layer.
January 29, 1998: Steven Goldstone, CEO and chairman of tobacco giant  RJR Nabisco, acknowledges the health risk of tobacco products under oath before Congress. Four years before Goldstone's confession, seven tobacco industry executives stood before the House Commerce Committee and swore that nicotine is not addictive.