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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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.
Approximately 500,000 babies are born each year in the United States to teenage mothers.
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.