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User: rantrover

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  1. ansible / fatline? on Inner Workings of High-Gain Mars Rover Antennas? · · Score: 1

    How close are humans to implementing Orson Scott Card's ansible or Dan Simmons's fatline? Will it emerge from the space, military or telecommunications industry?

  2. effect on fertility on Will Caffeine Cause Health Problems? · · Score: 1

    Quoted from http://www.healthwell.com/hnbreakthroughs/dec98/co nceive.cfm?path=hw

    Caffeine and alcohol are two common items in the diet that may contribute to infertility. Drinking too much alcohol causes the level of the hormone prolactin to rise in the blood serum, and high serum prolactin levels are associated with infertility. 3 Even moderate alcohol use, perhaps two drinks a day, reduces the chances of conception. 4

    Caffeine, found in coffee, tea and certain soft drinks such as colas, has the opposite effect. It reduces the concentration of serum prolactin, and low serum prolactin levels are also associated with infertility. 5 Women who drink at least 300 mg of caffeine daily (about two to three cups of coffee) may reduce their chance of pregnancy by about 25 percent. 6