Oreskes , Conway : 255 scientists wrote letter to reiterate global warming findings . Authors : Letter came after attack on scientist whose work shows human impact on climate . They say attacks similar to those aimed at science on DDT , second-hand smoke , acid rain . Comment:
Oreskes , Conway : 255 scientists wrote letter to reiterate global warming findings . Authors : Letter came after attack on scientist whose work shows human impact on climate . They say attacks similar to those aimed at science on DDT , second-hand smoke , acid rain . Common to all , they say , is link to think tanks promoting free markets , opposing regulations .