Facebook might understand your romantic prospects better than you do. In a blog post published yesterday, the company’s team of data scientists announced that statistical evidence hints at budding relationships before the relationships start.
As couples become couples, Facebook data scientist Carlos Diuk writes, the two people enter a period of courtship, during which timeline posts increase. After the couple makes it official, their posts on each others’ walls decrease—presumably because the happy two are spending more time together.
In the post on Facebook’s data science blog, Diuk gives hard numbers: During the 100 days before the relationship starts, we observe a slow but steady increase in the number of timeline posts shared between the future couple. When the relationship starts (“day 0”), posts begin to decrease. We observe a peak of 1.67 posts per day 12 days before the relationship begins, and a lowest point of 1.53 posts per day 85 days into the relationship.
Presumably, couples decide to spend more time together, courtship is off, and online interactions give way to more interactions in the physical world. When You Fall in Love, This Is What Facebook Sees - The Atlantic
Bowmouth guitarfish (Rhina ancylostoma)
The bowmouth guitarfish is a species of ray. This rare species occurs widely in the tropical coastal waters of the western Indo-Pacific. This large species can reach a length of 2.7 m (8.9 ft). The jaws are heavily ridged with crushing teeth arranged in wave-like rows. Usually found near the sea floor, the bowmouth guitarfish prefers sandy or muddy areas near underwater structures. It is a strong-swimming predator of bony fishes, crustaceans, and molluscs. This species gives live birth to litters of two to eleven pups, which are nourished during gestation by yolk. The International Union for Conservation of Nature (IUCN) has assessed the bowmouth guitarfish as Vulnerable because it is widely caught by artisanal and commercial fisheries for its valuable fins and meat. The bowmouth guitarfish, often described as prehistoric in appearance, is considered by some scientists to be the ‘missing link’ between sharks and rays based on the ray-like placement of the mouth and gill openings, and disc shape of the front part of the body and the shark-like streamlined appearance of the rest of the body and the powerful tail.
Scientist Sylvia Earle (TED Talk: My wish: Protect our oceans) has spent the past five decades exploring the seas. During that time, she’s witnessed a steep decline in ocean wildlife numbers — and a sharp incline in the number of ocean deadzones and oil drilling sites. An original documentary about Earle’s life and work premieres today on Netflix. Watch it here.
What happened to the coral reefs?
Between 1950 and 2014, half of the coral reefs across the oceans died.
What happened to tuna, sharks, and cod?
Between 1950 and 2014, Pacific Bluefin Tuna, sharks, and North Atlantic Cod were all almost fished to extinction. Between 5% and 10% remain.
The number of ocean deadzones then and now.
Ocean deadzones are spots in the sea where life no longer exists. They occur when massive fertilizer runoff (or other ocean crises) set in motion an oxygen-depriving chain of events leading to the death in one spot of fish, crabs and other sea creatures. In 1975, there was one documented deadzone. In 2014, there were 500+.
The number of oil drilling sites then and now.
Oil drilling in the Gulf Coast didn’t start and stop with the 2010 Deepwater Horizon oil disaster. But the practice is younger than you might think. In 1947, there was just one oil drilling site. In 2014, there were more than 30,000.