Researchers at the Natural History Museum at University of Oslo, Norway, were among the first in the world to start analyzing sperm cells to learn more about bird evolution and behavior. “To understand sexual infidelity in species, interpreting DNA is not enough. We also need to look at the shape and behavior of the sperm cells. Sperm research has opened…
Dogs and puppies are gifted at interpreting human communicative hints, and previous studies showed that they use human visual cues like pointing or gazing in order to find hidden food. Researchers of the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, have now studied for the first time whether dogs can locate hidden food by relying on auditory information…
The human body produces chemical cues that communicate gender to members of the opposite sex, according to researchers who report their findings in the Cell Press journal Current Biology. Whiffs of the active steroid ingredients (androstadienone in males and estratetraenol in females) influence our perceptions of movement as being either more masculine or more feminine. The effect, which occurs completely without awareness, depends…