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There is no mistaking yet. She is ready to mate. Finally, the lover/ unites a bit briefly. After two months, the breeding season is over. It is time for the long track back to their southern feeding grounds, but the females carrying the next generati

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Welcome to Wednesday. This is CNN Student News. We're going to get things started today with different forms of extreme wheather. First up, fire. This one in California has burn more than 30,000 acres, but fire fighters have around 60 percent contain

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144 calamities maybe fool the world The mighty mammoth once was the largest mamo of them all, a sight of magnificence, if not to say majesty, as it strolled across the primoridy of landscape. But where have they gone, those mighty beasts? One theory

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1. The Secret Service says a letter similar to two ricin-laced letters sent to New York Mayor Michael Bloomberg has been intercepted by a White House mail screening facility. The letter was addressed to President Obama and has been turned over to the

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Authorities think so, and they've designed simulators that shake, rattle, and roll Ted Landphair | Washington DC 25 March 2010 U.S. space agency simulators help prepare airplane pilots for crisis situations. But critics say they don't adequately repl

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It has long been thought that mammoths and mastodons rambled over North American subartic grounds between 75,000 and 10,000 years ago, and were made extinct by hungry new arrivals on the scene, human beings. But new evidence indicates mastodons proba

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Bears have long claws, but they get worn down by the daily grind, moving around and rooting for food. They are just not sharp enough to rip into the bisons hide. To solve this puzzle, we need to look to Africa. African buffalo are similar in size to

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Musk oxen and arctic hares are well-insulated against the cold as are the largest grazers of them all, the woolly mammoths. This herd is regrouping, ready for a long day feeding on the grasses beneath the snow. Mothers need to keep milk flowing for t

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Mud from the ancient riverbanks is good for building nests. lt also holds more evidence that will help us to reconstruct the ice age past. Every now and then,new clues surface, hinting at what else might lie beneath. ln this dried-up pond in South Da

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...plant material at a time, and were talking about something huge. Surprisingly, it isnt something huge which allows these giant herbivores to grow big enough to be all but invincible. In fact, its something incredibly small, and something meat eate

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the equivalent of a human being with a brain the size of a pea. Lobes for both sight and smell are tiny. Areas controlling information analysis, learning, and complex thought are barely developed. If you look at the size of their brain, you actually

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It is chemically impossible for methane to survive for long in the Martian atmosphere, so it must have been released recently. Now what makes methane? Cows make methane? Probably not cows. Oh, microbes, various sorts can release methane, there are a