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Scientists at UC Santa Cruz led a team of researchers from 30 institutions across North America in analyzing data from 3212 camera traps to show how human disturbance could be shifting the makeup of mammal communities.

The new study, published in the journal Global Change Biology, builds upon the team’s prior work observing how wildlife in the Santa Cruz Mountains respond to human disturbance. Local observations, for example, have shown that species like pumas and bobcats are less likely to be active in areas where humans are present, while deer and wood rats become bolder and more active. But it’s difficult to generalize findings like these across larger because human-wildlife interactions are often regionally unique.

So, to get a continent-wide sense for which species of mammals might be best equipped to live alongside humans, the team combined their local camera trap data with that of researchers throughout the U.S., Canada, and Mexico. This allowed them to track 24 species across 61 regionally diverse camera trap projects to see which larger trends emerged.

Amazon says it will be ‘even more seamless for customers’.


Amazon is shutting down its standalone Prime Now delivery app, with its speedy two-hour delivery options moving exclusively into the company’s main app and website, the company announced today. Prime Now services have already moved into the main app in India, Japan, and Singapore, while in other countries Amazon is already directing Prime Now users into its main app and website via a pop-up, CNBC notes. The standalone Prime Now app and website will be retired by the end of the year.

Originally launched in 2014, Prime Now was designed to offer deliveries of essential items within hours rather than days for Prime members. The service was initially available in just a small number of cities, but has since expanded to over 5000 locations around the world, CNBC notes. Writing in a blog post, Amazon’s vice president of grocery Stephenie Landry said shutting down the separate app will “make this experience even more seamless for customers.”

On a good day, things exit through the anus. But in rodents and pigs in respiratory distress, oxygen can be absorbed by tissues in the rectum, helping the animals recover, a new study suggests. The scientists behind the research propose that flushing oxygen into the rectum could one day help save human lives if conventional ventilation methods are unavailable.

“It looks like a crazy idea,” says Sean Colgan, a gastroenterologist at the University of Colorado, Boulder, who was not involved in the study. “But if you look at the data, it’s actually a very compelling story.”

Most mammals breathe through their mouths and noses and send oxygen to their body via the lungs. A few aquatic animals, including sea cucumbers and catfish, breathe through their intestines, and the intestinal tissues of humans can readily absorb pharmaceuticals. But no one knew whether oxygen could enter the bloodstream via mammalian intestines.