Proceedings of the National Academy of Sciences
Infants pick up cues on food by watching adults – study
Toddlers’ food preferences are fickle but a new study reveals that they register social cues about food from adults. “By watching toddlers react to people’s food preferences, researchers found that the little ankle-biters seem to make generalizations about good eats and who will like them based on social identities. Toddlers expected people in the same social groups to like the same foods and appeared puzzled if that wasn’t the case,” Ars Technica writes.
Cost to reduce Gulf of Mexico “dead zone”- $2.7 billion a year
It would cost $2.7 billion a year to reduce by two-thirds the size of the "dead zone" in the Gulf of Mexico through reductions in nutrient runoff, says a study published in the journal Proceedings of the National Academy of Sciences.
Precise use of fertilizer reduces greenhouse gas emissions
Over-application of nitrogen fertilizer results in a larger than previously estimated release of nitrous oxide, one of three major greenhouse gases, says research by Michigan State University appearing in the Proceedings of the National Academy of Sciences.