Given the task definition and input, reply with output. In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.

Starting in 1996, Alexa Internet has been donating their crawl data to the Internet Archive. Flowing in every day, these data are added to the Wayback Machine after an embargo period. ||||| Doctors in China were surprised to find that a young woman who had lived a normal life for more than two decades was actually missing an important part of her brain, according to a new report of her case. 
  
 The 24-year-old's strange condition was discovered when she went to doctors because of a monthlong bout of nausea and vomiting. The patient told the doctors she had also experienced dizziness her entire life. She didn't start walking until she was four and had never been able to walk steadily. 
  
 When the doctors scanned the woman's brain, they found she had no cerebellum, a region of the brain thought to be crucial for walking and other movements. Instead, the scans showed a large hole filled with cerebrospinal fluid. [16 Oddest Medical Case Reports] 
  
 "CT and MRI scans revealed no remnants of any cerebellar tissues, verifying complete absence of the cerebellum," the doctors wrote in the report, published Aug. 22 in the journal Brain. 
  
 Brain scans revealed the patient's brain was missing the cerebellum, which normally resides on the back of the head. Credit: Left: Alex Luengo Shutterstock.com - Right: Feng Yu et al. 
  
 The cerebellum, which means "little brain" in Latin, is responsible for coordination and fine movements, such as the movements of the mouth and tongue needed for producing speech. People with damage to this brain area typically experience debilitating motor difficulties. Yet contrary to the doctors' expectations, the Chinese woman's absence of the cerebellum resulted in only mild to moderate motor problems and slightly slurred pronunciation, according to the researchers. "This surprising phenomenon," demonstrates the plasticity of the brain early in life, they wrote. 
  
 "It shows that the young brain tends to be much more flexible or adaptable to abnormalities," said Dr. Raj Narayan, chair of neurosurgery at North Shore University Hospital and Long Island Jewish Medical Center in New York, who wasn't involved with the woman's case. "When a person is either born with an abnormality or at a very young age loses a particular part of the brain, the rest of the brain tries to reconnect and to compensate for that loss or absence," Narayan said. 
  
 This remarkable ability of the brain is thought to decline with age. "As we get older, the ability of the brain to tolerate damage is much more limited," Narayan said. "So, for example, in a 60-year-old person, if I took the cerebellum out, they would be severely impaired." 
  
 This is not the first case of a person found to be missing the cerebellum. In fact, there have been eight other similar cases reported, the researchers said. However, most cases involved infants or children who also showed severe mental impairment, epilepsy and large structural abnormalities in their brains, and most did not survive the condition. 
  
 It is possible that more people are affected by this rare condition but they don't get diagnosed or reported, Narayan said. "In the future, it may become more recognized because of brain imaging," he added. 
  
 Email Bahar Gholipour. Follow Live Science @livescience, Facebook & Google+. Originally published on Live Science. ||||| DON'T mind the gap. A woman has reached the age of 24 without anyone realising she was missing a large part of her brain. The case highlights just how adaptable the organ is. 
  
 The discovery was made when the woman was admitted to the Chinese PLA General Hospital of Jinan Military Area Command in Shandong Province complaining of dizziness and nausea. She told doctors she'd had problems walking steadily for most of her life, and her mother reported that she hadn't walked until she was 7 and that her speech only became intelligible at the age of 6. 
  
 Doctors did a CAT scan and immediately identified the source of the problem – her entire cerebellum was missing (see scan, below left). The space where it should be was empty of tissue. Instead it was filled with cerebrospinal fluid, which cushions the brain and provides defence against disease. 
  
 The cerebellum – sometimes known as the "little brain" – is located underneath the two hemispheres. It looks different from the rest of the brain because it consists of much smaller and more compact folds of tissue. It represents about 10 per cent of the brain's total volume but contains 50 per cent of its neurons. 
  
 Although it is not unheard of to have part of your brain missing, either congenitally or from surgery, the woman joins an elite club of just nine people who are known to have lived without their entire cerebellum. A detailed description of how the disorder affects a living adult is almost non-existent, say doctors from the Chinese hospital, because most people with the condition die at a young age and the problem is only discovered on autopsy (Brain, doi.org/vh7). 
  
 The cerebellum's main job is to control voluntary movements and balance, and it is also thought to be involved in our ability to learn specific motor actions and speak. Problems in the cerebellum can lead to severe mental impairment, movement disorders, epilepsy or a potentially fatal build-up of fluid in the brain. However, in this woman, the missing cerebellum resulted in only mild to moderate motor deficiency, and mild speech problems such as slightly slurred pronunciation. Her doctors describe these effects as "less than would be expected", and say her case highlights the remarkable plasticity of the brain. 
  
 "These rare cases are interesting to understand how the brain circuitry works and compensates for missing parts," says Mario Manto, who researches cerebellar disorders at the Free University of Brussels in Belgium. The patient's doctors suggest that normal cerebellar function may have been taken over by the cortex – brain scans should reveal the answer. 
  
 Read more amazing stories of people experiencing neurological mysteries in Mindscapes. 
  
 This article appeared in print under the headline "The woman with a hole in her brain" 
  
 New Scientist 
  
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The cerebellum is a pretty important part of the brain—it plays a key role in walking, among other movements—so doctors in China were more than a little surprised when a 24-year-old patient who lives a relatively normal life turned out not to have one. A CT scan revealed nothing but cerebrospinal fluid where the "little brain," which contains around half the brain's neurons, was supposed to be, reports the New Scientist. The woman had sought medical help after experiencing a month of vomiting; she also noted she has always walked unsteadily. She has slightly slurred speech, and her mother told doctors she hadn't started walking until age 7 or speaking intelligibly until around age 6. The woman, who is married with a daughter, has no history of neurological problems in her family, researchers write in the journal Brain. Only eight other people have ever been found to have the condition, known as cerebellar agenesis, but most other cases involved infants with severe mental impairment and were discovered upon autopsy, the researchers say. This case "shows that the young brain tends to be much more flexible or adaptable to abnormalities," a professor of neurosurgery at New York's North Shore University Hospital tells LiveScience, which notes that even a damaged cerebellum can cause severe motor challenges. "When a person is born with an abnormality ... the rest of the brain tries to reconnect and to compensate for that loss or absence." (But as adaptable as the brain is, it's a myth that we only use 10% of it.)