Uncategorized

Cornell project brings peregrines back to the eastern United States

With a little help, peregrine falcons make a comeback from the devastating effects of DDT.

Letters

Defining the human species Having read “Humans benefited by interbreeding” (SN: 10/8/11, p. 13), I wonder if I have missed what, to me, seems a major change in the definition of “species.” I was taught that the attempted crossbreeding of animals of two different species could result in either no offspring or sterile offspring. If […]

SN Online

LIFE Cycads, often called “dinosaur plants,” aren’t so ancient after all. Read “Cycads not ‘living fossils.’ “ HUMANS Ancient cooking pots show diets shifted slowly from fishing to agriculture.