Why the Scientific American endorses Joe Biden

The magazine’s editors explain why they have decided to break a tradition of never backing a presidential candidate in its 175-year history

Steep decline in predatory fish population in past 40 years, says study

Humans reduced the biomass of predatory by two-third in just one century; decline hastened in the 1970s

Cuban crocodiles near extinction; inter-breeding with other species main reason

Study finds breeding between Cuban and American crocodiles is more extensive than thought earlier