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Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.
Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.
There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.
![Browning and Gunning demonstrated that placental transfer tissues increase plant reproductive succes](https://biology-forums.com/gallery/47/medium_33_17_07_11_10_52_02.jpeg)
![Browning and Gunning demonstrated that placental transfer tissues increase plant reproductive succes](https://biology-forums.com/gallery/47/medium_33_17_07_11_10_52_54.jpeg)