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Thursday, November 17, 2016
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Below are some of the most wonderful natural wonders in the US, let's see
Yosemite National Park
Famous conservationist and wilderness writer John Muir called Yosemite nature’s temple. Gazing up at towering granite monoliths such as El Capitan and at Yosemite Falls, North America’s highest waterfall, you’ll know exactly what he meant. Declared a Unesco World Heritage Site for its unique geological features carved by glaciers, Yosemite also sustains a variety of rare wildlife inhabiting California’s craggy Sierra Nevada mountain range.
Top tip: Yosemite Valley’s waterfalls peak in late spring, which is a less hectic time to visit the park than during summer.
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Grand Canyon National Park
Measuring a mile deep, up to 18 miles wide and more than 275 miles long, no other sight in the USA beats this giant hole in the ground for instilling stupefying awe. Peering over the edge of the Grand Canyon is enough of a thrill for some, but to really appreciate the canyon’s grandeur, hike all the way down inside it to the rushing Colorado River.
Top tip: To escape the crowds, visit the canyon’s North Rim, which gets one tenth as many visitors as the South Rim. Note that the North Rim is open from mid-May to mid-October only.
Redwood National & State Parks
The world’s tallest trees grow on the fog-kissed Northern California coast. Redwoods can reach a height of 379ft, taller than the Statue of Liberty in NYC, and live for up to two millennia. Almost half of all the old-growth redwood trees remaining that have never been logged are protected by the chain of Redwood National and State parks.
Top tip: Pick up a free permit to visit hidden Tall Trees Grove at the national park’s Thomas H Kuchel Visitor Center on Hwy 101.
Denali National Park
In the indigenous Koyukon Athabaskan language, it means ‘the high one,’ which is fitting because Denali is North America’s highest peak (20,310ft). Prominently poised above the surrounding wilderness, it’s in fact taller than Everest when measured from its base. Climbers first reached the south summit in 1913, a feat now attempted by more than a thousand people every year.
Top tip: Flightseeing tours depart from Talkeetna, a railroad town about 150 miles south of Denali National Park.
Niagara Falls
Niagara Falls is not just one, but three waterfalls that gush along the US-Canada boundary between New York and Ontario: Horseshoe Falls, American Falls and Bridal Veil Falls. They aren’t the USA’s tallest waterfalls, but together these powerful cascades have a bigger water flow than any others on the planet. Get up close and feel the cool spray on a Maid of the Mist boat tour.
Top tip: The Canadian side of the falls claims more natural beauty, so bring your passport for international border crossings.
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Yellowstone National Park
Yellowstone is the USA’s oldest national park and is a wonderland of unique geology and wildlife. At this Unesco World Heritage Site and Biosphere Reserve, you’ll be amazed by the world’s largest collection of geysers and hydrothermal features, including hot springs, boiling mud pots and steaming fumaroles. Look for herds of bison roaming free alongside the park’s main roads.
Top tip: Vacationing here during early fall avoids some of the biggest crowds, but be prepared for freezing overnight temperatures and, possibly, snowfall.
Kentucky’s Mammoth Cave
In America’s heartland, aptly named Mammoth Cave is the world’s longest cave system. Almost 400 miles of underground passageways have been explored (so far, that is) inside this limestone karst cave labyrinth sculpted by subterranean rivers. See oddly shaped stalactites, stalagmites and other impressive speleothem formations on a lantern-lit cave tour.
Top tip: Bring a sweater or a jacket, since temperatures inside the cave average 54°F (12°C).
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Wednesday, November 9, 2016
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Here are a handful of fascinating, little-known facts about some of the weirdest creatures: Marsupials facts
Marsupials are most diverse in Australia and New Guinea where there are no placental mammals.
Wherever placental mammals and marsupials evolved side-by-side for long periods of time, placental mammals often displaced marsupials through competition for similar niches. In regions where marsupials were isolated from placental mammals, marsupials diversified. This is the case with Australia and New Guinea, where placental mammals are absent and where marsupials were allowed to diversify into a variety of different forms. This might be strange but fact of life with Marsupials.
One species of marsupial that inhabits South America is more closely related to Australian marsupials than American marsupials.
The monito del monte, a marsupial from Argentina and Chile, is more genetically similar to Australian marsupials than it is to the American marsupials with which it shares its continent. It is thought that the monito del monte's similarity to Australian marsupials supports the hypothesis that marsupials spread from South America to Australia by way of Antarctica at a time when those land masses were connected, between 100 and 65 million years ago. Fossil evidence also supports this theory.
Marsupials do not nourish their embryos with a placenta.
A major difference between marsupials and placental mammals is that marsupials lack a placenta while in the uterus. In contrast, placental mammals develop within the mother's womb and are nourished by a placenta. The placenta—which connects the embryo of a placental mammal to the mother's blood supply—provides the embryo with nutrients, gas exchange and waste elimination. Marsupials, in contrast, lack a placenta and are are born at an earlier stage in their development than placental mammals. After birth, marsupial young continue their development nourished by their mother's milk.
Marsupials give birth to their young very early in their development.
When they are born, marsupials are nearly embryonic state. At birth, their eyes, ears and rear limbs are poorly developed. In contrast, structures that they need to crawl to their mother's pouch to nurse are well developed. This includes their forelimbs, nostrils, and mouth are well developed.
After they are born, most young marsupials continue their development in their mother's pouch.
They must craw from the mother's birth canal to her nipples, which are in most species located within a pouch on her belly. Once in the pouch, the newborn attaches itself to a nipple and feed on their mother's milk while they continue their development. When they reach a level of development similar to a newborn placental mammal, they emerge from the pouch. Enjoy the best collection of science facts on our site to widen your knowledge.
Female marsupials have a double reproductive tract.
Female marsupials have two uteri. Each uterus has its own lateral vagina and young are born through a central birth canal. In contrast, female placental mammals have only one uterus and one vagina.
Marsupials move using a variety of methods.
Kangaroos and wallabies use their long back legs to hop. When they hop at low speeds, it requires considerable energy and is quite inefficient. But when they hop at high speeds, the movement becomes much more efficient. Other marsupials move by running on all four limbs or by climbing or waddle.
Only one species of marsupial inhabits North America.
The Virginia opossum is the only species of marsupial that inhabits North America. Virginia opossums are solitary nocturnal marsupials and are the largest of all opossums.
The smallest marsupial is the long-tailed planigale.
Long-tailed planigales measure between 2 and 2.3 inches and weigh on average a mere 4.3 grams. Long-tailed planigales inhabit a variety of habitats in northern Australia including clay soil woodlands, grasslands and floodplains.
The largest marsupial is the red kangaroo.
The red kangaroo is the largest of the marsupials. Male red kangaroos grow to be more than twice the weight of females. Male red kangaroos are rusty red in color and weigh between 55 and 200 pounds. They measure between 3¼ and 5¼ feet long.
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Saturday, November 5, 2016
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Rude funny pictures, funny quotes and pictures, funny jokes and pictures, rude and funny pictures, rude pictures
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