pplapi.com

pplapi.com (pronounced “people API”) is a web-based data service that provides access to a synthetic world population, n = 7, 171, 922, 938. Researchers can submit queries to pplapi.com using its Application Programming Interface (API) to obtain samples consisting of synthetic agents drawn from this population. Because researchers do not need to host the synthetic population themselves, pplapi.com reduces start-up costs associated with using synthetic agents in research. pplapi.com provid...

 Using City Sewage to Survey a City's Microbiome

The team gathered samples over the course of a year from sewage treatment plants in 71 different cities in 31 states, chosen for their geographic spread and range of obesity rates. The leanest city sampled was Steamboat Springs, Colorado, with an obesity rate of 13.5 percent, while the heaviest was St. Joseph, Missouri, with a rate of 37.4 percent. Bacteria from human waste make up just a small proportion of the bacteria found in sewage. But using DNA sequencing, the researchers could identi...

 Orgasms and Sperm Retention

t. Baker and Bellis discovered that the amount of sperm that is retained in a woman's vagina after sex varies according to whether she had an orgasm and when. It also depends on how long it was since she last had sex: The longer the period, the more sperm stays in, unless she has what the scientists call "a noncopulatory orgasm" in between. So far none of this contained great surprises; these facts were unknown before Baker and Bellis did their work (which consisted of samples collected by ...