A blood blister forms when skin and small blood vessels are damaged without breaking the skin. Trapped beneath the skin surface is some blood and skin fluid. Blood blisters are commonly caused by accidents in which the skin is pinched by a tool or a heavy weight, or they may occur from constant rubbing back and forth.
1 Sunshine hours in Chicago, Illinois range between 3:42 per day in December & 10:14 for each day in July. 2  The longest day of the year is 15:02 long and the shortest day is 8:57 long.  The longest day is 6:04 longer than the shortest day.
Once-in-a-generation strawberry moon Monday night. For one night, it was the Summer of Love all over again. Astronomically speaking. For the first time since June 1967, two astronomical phenomena occurred at the same time. Monday evening, a full strawberry moon shone in the night sky during the summer solstice â the longest day of the year. EarthSky.org said a full moon on a summer solstice is a rare event, and another one is not likely to come around until June 21, 2062.