Last month, a twelve-year-old girl named Lauren Arrington was credited with research showing that lionfish, an invasive species, were surviving in water with a much lower percentage of salinity than was thought possible. [more inside]
Stuck in the Antarctic ice we set out to study - Erik van Sebille of the Australasian Antarctic Expedition 2013 describes his fieldwork in Antarctica. The Guardian has extensive coverage of the expedition, including visiting the remains of a previous expedition, how they became icebound, and their rescue.
Is blood plasma salinity the same as seawater? No, but that proves evolution. "The answer is most definitely NOT that oceans were 1/3 as salty back then. It most definitely IS that the earliest vertebrates did evolve in salt water and then moved into fresh water....They have devised an extremely clever trick in kidney structure to allow salt transport pumps which really take salt back INTO the body from the urine but still manage to use them to produce urine much more concentrated that their body fluids and so excrete salt FROM the body."
Salt: Not just a condiment, salt is a major force shaping our world. In Australia, what do you get when you combine ancient salt-pans with European farming practices? In one state alone, we're losing a football field an hour to the salinity crisis. What do you farm when all you have is salt?