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He and other administration officials at a news conference praised the report Friday by a U.N. - sponsored panel of hundreds of climate scientists from 113 governments , who said there is little doubt the earth is warming as a result of man-made emissions . " The spinach contamination may have had a spillover effect to other produce items , " said Ed Mackowiak , vice president of sales for FreshLook Marketing . " Computer programmer Bob Brill of Ann Arbor , Mich ., is another artist who has been playing with pursuit curves for a long time . Markman acknowledged that though doctors do n't know how long the vaccine will remain effective and if or when booster shots will be needed , those questions will be answered . In the long term , he cautions , " if every seller then starts incorporating advanced features [ such as images ] in their auctions , this will become a matter of comparative parity , where you do n't receive any benefit from incorporating these features , but need to incorporate them merely to sell your item . so that is why everybody needs to be a little anxious about what is happening and everybody needs to be forceful on moving rapidly and strongly forward with intensifying measures . He argues that a mystical fascination with the unknown and the occult , prevalent throughout that society during the late Victorian era and into the early twentieth century , had a tremendous impact on science and cosmology .