Galynka Plus

10/11/2021

Much like the rings of a tree can tell you its age and provide clues about the life it has lived, so too does the long tusk of the narwhal. Recent research led by a bioscience professor at Denmark's Aarhus University has shown that this peculiar arctic whale adds a layer to its distinctive tusk each year. And not only do these layers offer insight into the age of the narwhal (they've been known to live up to 50 years) but the conditions in which they lived—such as level of pollution, temperature levels, and even what their diet consisted of. You are what you eat!

14/10/2021

Why do we get goosebumps? In this physiological reaction, small muscles attached to individual body hairs contract, which leads the hair to stand on end. We inherited this ability from our ancestors in part as a way for our (then) coat of body hair to capture air beneath it and in that way retain heat. But, as George A. Bubenik, a physiologist and professor of zoology at the University of Guelph in Ontario, Canada, explained to Scientific American, it also caused our ancestors to appear bigger than they were, helping to ward off predators when they were frightened or on the defense. With modern humans having less body hair, goosebumps no longer cause us to look that much more intimidating.

14/10/2021

14/10/2021

14/10/2021

14/10/2021

A surprising side effect of pregnancy is that nails and hair grow faster than usual. This is due to changes in hormones as well as increased blood circulation and metabolism supplying nutrients. According to Amy O'Connor, writing for What to Expect, a pregnant person's hair also "might feel thicker and look more shiny and healthy than usual." Though she warns that it can occasionally mean that the expecting "may suddenly sprout strands in places [they'd] rather not." If you want to question everything you know, check out 50 Well-Known "Facts" That Are Actually Just Common Myths.

07/10/2021

Thomas Hargrove has been archiving homicides for years through his Murder Accountability Project. Through his experience, he came up with an algorithm that found patterns in recent unsolved murders linked to at least one other murder through DNA. This allowed him to estimate the number of unsolved cases in the U.S. at any given time. According to The New Yorker, he believes that the number of active serial killers in the U.S. is around 2,000.

07/10/2021

Ever wonder why your little puppy obsesses over those squeaky toys? Because dogs are descendants of wolves whose instincts include hunting smaller animals. The sound a squeaky toy makes is very similar to the sound a small animal makes when being hunted. When Ol' Lassie hears that, she gets excited because of these killer survival skills.