Republicans think that by showing natural causes of global warming, it makes a difference as to whether humans should spend billions on technology to slow it. But even if global warming isn't man-made, it will still push coastlines inland, totally change the best latitudes for each crop, and cause millions of Americans to migrate northward. So we should manage it or at least slow it, to give us centuries to adapt, not just years. In summary, even if you're right, you're wrong.
The Mars picture is a computer creation (with enhanced colors) which changed a vertical photograph to a horizontal angle. The widest parts of the stripes are 15 feet wide. The stripes stay for the summer, then disappear in the winter, just like melting ice would. The temperature at this location prevents thawing of carbon dioxide or water, unless the water is saltier than Earth's oceans. So if it's flowing liquid, it's briny water gurgling from underground ice. But the scientists say that it wouldn't leave the dark stripe, and even if so, the stripes wouldn't disappear in the winter, as they do. So it's unexplained until they come up with a theory. The significance is that on Earth, microscopic life hibernates in ice until the water turns liquid in the summer. On Mars, ice has been directly detected, but liquid water has not, unless this is the first time.
Does anyone else have an image in their brain of Martians saying to each other "Those dumbass humans FINALLY found the water.....Sure took them long enough"
