A senator has delayed submitting a resolution to honor pioneering environmentalist Rachel Carson on the 100th anniversary of her birth after a colleague signaled he would block it because of her aggressive fight against pesticides. Carson's 1962 book "Silent Spring" revealed the harmful effects of DDT and other pesticides and helped launch the environmental movement. The longtime resident of Silver Spring, Md., died in 1964. She would have turned 100 this Sunday. Sen. Benjamin Cardin (news, bio, voting record)'s resolution had intended to honor Carson for her "legacy of scientific rigor coupled with poetic sensibility." But Susan Sullam, a spokeswoman...