Carson's work had a powerful impact on the environmental movement. "Silent Spring", in particular, was a rallying point for the fledgling social movement in the 1960s. According to environmental engineer and Carson scholar H. Patricia Hynes, ""Silent Spring" altered the balance of power in the world. No one since would be able to sell pollution as the necessary underside of progress so easily or uncritically." Carson's work, and the activism it inspired, are at least partly responsible for the deep ecology movement, and the overall strength of the grassroots environmental movement since the 1960s. It was also influential on the rise of ecofeminism and on many feminist scientists.