|
|
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.
A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.
Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.
Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.
All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.
![The anatomical position: standing erect, gazing straight ahead, arms down at sides, palms facing for](https://biology-forums.com/gallery/47/medium_14755_16_09_12_5_52_12_8745771.jpeg)
![Charles Darwin may be dead and gone but a recent write-in campaign has pitted him against Republican](https://biology-forums.com/gallery/47/medium_4_20_10_12_12_49_12_9506391.jpeg)
![Alexander Fleming photographed in his lab where he observed the natural competition between a fungus](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_20_13_100452376.jpeg)