The Curiosity rover, which is designed to explore Mars, has found an ancient oasis on Mars. Researchers working with the Curiosity rover have found salt-enriched…
Wolves have returned to the Yellowstone National Park 15 years ago. Since that time, scientists find the return very positive – they keep elk at the bay area and help flourishing the ecosystem of the park. Wolves disappeared from the Yellowstone National Park in 1926, when rangers killed the last two wolf pups near Soda Butte Creek. Over 70 years, wolves were gone from the park unless in 1996 scientists did introduce the gray wolves back to the Yellowstone National Park. According to the scientists from Oregon State University, with the return of wolves to the Yellowstone, the ecosystem of the park has been significantly improved. This is explained by the fact that elks fearing wolves are staying solitary at the bay area and “browse” less in the park, which means they eat fewer twigs, leaves, and shoots from the park’s young trees.
This is the reason why, according to scientists, trees and shrubs have begun recovering along some of Yellowstone’s streams, which are now providing improved habitat for beaver and fish, with more food for birds and bears. Yellowstone National Park was opened on March 1, 1872 and it was the first national park in the world. The goal of the park was preservation of the area’s geysers and other geothermal wonders. And since in that period of time, public hunting was allowed and people were free to kill any game or predator they came across, very soon park authorities faced the problem of losing grey wolf species in the Yellowstone National Park. On December 24, 2011, the Los Angeles Times reported that a lone gray wolf wearing a GPS collar is now “a day or two’s trot” away from California. If the wolf will cross the California border, he will be the first wild wolf recorded in the Golden State since 1924.
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