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Giants of the Sky

Oct 11, 2019

The largest living bird that can fly is the royal albatross. It has a wingspan measuring over 11 feet, tip to tip. In other words, its wingspan is longer than two average humans standing on top of each other. However, the royal albatross is far from the biggest organism ever to fly. That title has a few contenders.


Meganeuropsis is a genus of extinct insects that lived 290 million years ago. It superficially resembles modern dragonflies, with long slender bodies, a bulbous head, and two pairs of wings.

However, what sets it apart from its modern-day relatives is its size. It had a wingspan measuring in over 28 inches and a total body length of 17 inches. This makes it the largest insect ever to fly. Fossil evidence also showcased large mandibles and sturdy, spiny legs. This suggests that this organism was a predator.

Argentavis magnificens

Meganeuropsis was a gigantic insect, indeed. However, it is completely dwarfed by the Argentavis – a huge, extinct bird of prey that lived 5.3 million years ago. According to fossil evidence, it had a wingspan measuring between 16 to 21 feet, tip to tip. That means its wingspan is on par with the height of an average giraffe. When standing upright, Argentavis would have been as tall as the average human (around 5ft or more).

It was so big that no carnivorous animals during that period could prey upon it. Hence, research shows that the mortality rate from predation was quite low. Death would have probably occurred only due to old age or accidents.

Quetzalcoatlus northropi

Though Argentavis was the largest bird to fly, it was far from the largest flying organism. That title is held by the Quetzalcoatlus, an extinct flying reptile with a minimum wingspan of 36 feet. However, more recent fossil evidence suggests that estimate could be as high as 52 feet. This makes Quetzalcoatlus larger than a small plane – a true giant of the skies. It is characterized by a very long neck, a huge beak and a large crest on top of its head.

On the ground, Quetzalcoatlus measured 9.1 feet at the shoulders when standing upright. It was quadrupedal, meaning that it walked on all fours. Biologists have speculated that its feeding behaviour is similar to terrestrial stalkers, hunting small vertebrates and fishes from shallow streams.

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What should you pay attention to in h1b Extension?

Jun 1, 2019

The h1b visa for 2019 (also known as h1b签证2019) is about to come to an end , and many will welcome the h1b extension application. Generally speaking, everyone will say that the h1b visa (also known as h1b签证) is a work visa with a valid period of 6 years. However, the fact is that after the first application is successful, h1b is valid for a maximum of three years. After three years, it can be extended for another three years, for a total of six years. So when do you apply for h1b Extension? You can submit an h1b extension application within six months of the expiration of your current h1b visa. In other words, if your H-1B expires in the second half of this year, you can now start preparing for the H-1B extension! For the small partners who have already got H-1B, the process of applying for extension is not complicated, because after all, once applied, it can be said that it has become familiar.

The H1b extension is basically similar to the first h1b visa process (also known as h1b签证流程) and the h1b transfer process (also known as h1b transfer流程), except that there is no lottery. In addition to the materials submitted for the first time, the most important documents are the I-797 Approval Notice approved in the previous h1b, the W-2 form in the current company, and the payroll in the last 3-4 months. The salary amount must meet the salary filled in when applying for h1b. After you apply for the h1b extension, you can continue to work legally for 240 days even if the existing H-1B visa expires. At the same time, as with the first application of h1b, after applying for the PP expedited service, the Immigration Bureau will give the trial results within 15 natural days. Like h1b rfe, the extension may also be rfe, then you only need to make up the material.

In theory, after the h1b work visa (also known as h1b工作签证) obtained from the lottery has been used up for 6 years, it can no longer be renewed. However, if you submit a Work Permit (PERM) application or an I-140 application five years before the H-1B expires, you can continue to apply for the H-1B extension without a 6-year limit, one year until the green card application result. come out. In other cases, if your I-140 has been approved and is waiting for the green card to be scheduled, you can apply for an extension of three years even if you are in the sixth year of the H-1B period.

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