In 2007, researchers at the University of CaliforniaâDavis determined that our Solar System was fully formed at 4.568 billion years ago. They did this by determining the age of stony materials from the asteroid belt.
When to see a doctor. See your doctor immediately if you experience the signs and symptoms of migraine with aura, such as temporary vision loss or floating spots or zigzag lines in your field of vision. Your doctor will need to rule out more-serious conditions, such as a stroke or retinal tear.
Non-surgical treatments for lines and wrinkles. Laugh lines around the eyes are first apparent only when you smile, says James Zins, MD, Department Chair of Plastic Surgery at Cleveland Clinic. But sun damage and the passage of time take their toll, eventually making these lines visible when your face is at rest.