According to a study by the University of Nebraska, hawk moths can be found in all parts of the world except Greenland. Some areas only host these moths for part of the year because many species make ...

Walking in her yard in Santa Fe, Argentina, one recent morning, Luján Eroles found what appeared to be a two-headed snake. At about four inches long, the creature greatly resembled a viper with a head ...

IN experiments on phototaxis in caterpillars, great variability is often found among the reactions to the same conditions of different individuals, or of the same individual at different times. No ...