- 薰Lv 51 decade agoFavorite Answer
Oil prices spiked to a record $115.07 a barrel in midday trading, after a government report showed an unexpected crude supply drop. U.S. light sweet crude for May delivery settled at $114.93 a barrel on the New York Mercantile Exchange. In the short term, momentum could push crude prices higher still, according to Brian Hicks, co-manager of the Global Resources Fund at U.S. Global Investors. However, Hicks says, "at some point, seasonal factors will come into play and we will see a pullback in the second quarter."
The ghostly, full-body impressions of three amphibians performing what might be a courtship ritual have been found in a forgotten 330 million-year-old rock from Pennsylvania. The unprecedented impressions raise the possibility that the courtship behavior, seen in many modern salamanders, is far, far older then imagined. The three impressions show foot-long creatures with large heads, short trunks, stout limbs and webbed four-toed feet. Their body positions reflect almost exactly those of salamanders today in the process of mating, although it's impossible to know for certain what the ancient animals were doing.
Her findings suggest the key conditions that formed our moon occur in no more than 10 percent of evolving planetary systems. "When a moon forms from a violent collision, dust should be blasted everywhere," said Gorlova, the lead author of a study that appears in the current issue of Astrophysical Journal.
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- Anonymous6 years ago
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- 浮士德Lv 41 decade ago