Intermediate Word:  shallop (a) shellfish  (b) rowboat  (c) Indian herb  (d) wooden-shoe dance
Difficult Word: - rochet - (a)
man-about-town  (b) bishop's ceremonial vestment  (c) leg of mutton cooked in spices and a meat-flavored white sauce  (d) flat, mid-pivoted yarn skein and holder

The Rovers That Just Won't Stop - Space.com  Each spacecraft was originally expected to last 90 days. On Nov. 21, Spirit completed one martian year—some two Earth years—on Mars. Opportunity, reached that same milestone Dec. 12. Both rovers found what they were sent to probe: signs of past water on Mars. Spirit, which is about the size of a golf cart has now wheeled itself over three miles since landing in Gusev Crater. Opportunity’s odometer reads over 4 miles on the opposite side of the planet.     
Environment and Cancer: The Links Are Elusive  - NY Times  While most scientists think that only a tiny fraction of cancers might be caused by low levels of environmental poisons, these are cancers that could, in theory, be avoided. They include, for example, a slightly higher rate of lung cancer and leukemia in farmers who used the insecticide diazinon and a possible increase in prostate cancer among farmers who used methylbromide to fumigate the soil. The investigators looked for an association between pesticides and herbicides and breast cancer, but they did not find one  Dr. Wogan studied men in Shanghai who were eating foods with high doses of aflatoxin. They ended up with four times the risk of liver cancer. Another cause of liver cancer, hepatitis B infections of the liver, increases the risk by a factor of seven. Then Dr. Wogan noticed something that astonished him. The risk of liver cancer was increased 70 times in people who met both criteria; they ate contaminated foods and they were infected with hepatitis B. 


Vitamin D 'can lower cancer risk'  - BBC  High doses of vitamin D can reduce the risk of developing some common cancers by as much as 50%, US scientists claim. Researchers reviewed 63 old studies and found that the vitamin could reduce the chances of developing breast, ovarian and colon cancer, and others. Taking 1,000 international units (IU) - or 25 micrograms - of the vitamin daily could lower an individual's cancer risk by 50% in colon cancer, and by 30% in breast and ovarian cancer, they said. More than 2,000 IU - 50 micrograms - a day can lead to the body absorbing too much calcium, possibly damaging the liver and kidneys. 

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