In this task, you are given an article. Your task is to summarize the article in a sentence.

Input: Consider Input: The footprints are more than 800,000 years old and were found on the shores of Happisburgh.
They are direct evidence of the earliest known humans in northern Europe.
Details of the extraordinary markings have been published in the science journal Plos One.
The footprints have been described as "one of the most important discoveries, if not the most important discovery that has been made on [Britain's] shores," by Dr Nick Ashton of the British Museum.
"It will rewrite our understanding of the early human occupation of Britain and indeed of Europe," he told BBC News.
The markings were first indentified in May last year during a low tide. Rough seas had eroded the sandy beach to reveal a series of elongated hollows.
I walked with Dr Ashton along the shore where the discovery was made. He recalled how he and a colleague stumbled across the hollows: "At the time, I wondered 'could these really be the case? If it was the case, these could be the earliest footprints outside Africa and that would be absolutely incredible."
Such discoveries are very rare. The Happisburgh footprints are the only ones of this age in Europe and there are only three other sets that are older, all of which are in Africa.
"At first, we weren't sure what we were seeing," Dr Ashton told me, "but it was soon clear that the hollows resembled human footprints."
The hollows were washed away not long after they were identified. The team were, however, able to capture the footprints on video that will be shown at an exhibition at London's Natural History Museum later this month.
The video shows the researchers on their hands and knees in cold, driving rain, engaged in a race against time to record the hollows.  Dr Ashton recalls how they scooped out rainwater from the footprints so that they could be photographed. "But the rain was filling the hollows as quickly as we could empty them," he told me.
The team took a 3D scan of the footprints over the following two weeks. A detailed analysis of these images by Dr Isabelle De Groote of Liverpool John Moores University confirmed that the hollows were indeed human footprints, possibly of five people, one adult male and some children.
Dr De Groote said she could make out the heel, arch and even toes in some of the prints, the largest of which would have filled a UK shoe size 8 (European size 42; American size 9) .
"When I was told about the footprints, I was absolutely stunned," Dr De Groote told BBC News.
"They appear to have been made by one adult male who was about 5ft 9in (175cm) tall and the shortest was about 3ft. The other larger footprints could come from young adult males or have been left by females. The glimpse of the past that we are seeing is that we have a family group moving together across the landscape."
It is unclear who these humans were. One suggestion is that they were a species called Homo antecessor, which was known to have lived in southern Europe. It is thought that these people could have made their way to what is now Norfolk across a strip of land that connected the UK to the rest of Europe a million years ago. They would have disappeared around 800,000 years ago because of a much colder climate setting in not long after the footprints were made.
It was not until 500,000 years ago that a species called Homo heidelbergensis lived in the UK. It is thought that these people evolved into early Neanderthals some 400,000 years ago. The Neanderthals then lived in Britain intermittently until about 40,000 years ago - a time that coincided with the arrival of our species, Homo sapiens.
There are no fossils of antecessor in Happisburgh, but the circumstantial evidence of their presence is getting stronger by the day.
In 2010, the same research team discovered the stone tools used by such people. And the discovery of the footprints now all but confirms that humans were in Britain nearly a million years ago, according to Prof Chris Stringer of the Natural History Museum, who is also involved in the research at Happisburgh.
"This discovery gives us even more concrete evidence that there were people there," he told BBC News. "We can now start to look at a group of people and their everyday activities. And if we keep looking, we will find even more evidence of them, hopefully even human fossils. That would be my dream".
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Output: Scientists have discovered the earliest evidence of human footprints outside of Africa, on the Norfolk Coast in the East of England.


Input: Consider Input: Little is known about critical care delirium, or ICU psychosis, which triggers psychological effects in patients in intensive care.
During delirium some patients believe doctors are trying to kill them, they see ghostly figures, suffer hallucinations and anxiety.
Most patients recover quickly with the correct help.
A recent study found that some 55% of people who survive intensive care treatment  go on to develop psychological disorders like depression or post-traumatic stress disorder.
Frances, who did not wish to give her surname, was in intensive care in the Royal Victoria Hospital in Belfast for four weeks following complications during her second heart bypass.
She had never heard of critical care delirium.
"When I became aware, firstly, I had terrible hallucinations. Other patients were not in their beds, they were in pop-up cars. There were people dressed as ninjas at each side of the bed.
"I felt they were going to harm us and we had to be good. Looking back now I believed they were trying to kill us and they did it by injecting your stomach.
"On one occasion, I even hid in a cupboard to try and stop them killing me.
"When my family came to see me I was begging them to take me home and told them if they didn't take me home I would be killed that night. I started to text people and tell them to come and get me. It was worse for my family knowing I was so unhappy," she said.
"It would be reassuring for families to know that it is actually a condition and it's not just happening to you.
"You do feel very embarrassed about it and you don't want to bring it up because you feel so embarrassed."
A recent study of 157 patients at University College Hospital, in London, found high levels of depression, anxiety and post traumatic stress disorder.
Dr George Gardiner, a clinical lead at the Critical Care Network in Belfast, has been studying critical care delirium. He said the condition is not unusual.
"The symptoms are caused by the environment and the critical illness suffered. They are upsetting and unsettling for the family and friends who will also see what is going on. It is something we in the intensive care unit have been concentrating on for the last ten years," he said.
International research has been focused on trying to improve how to spot the symptoms to treat the condition and the Critical Care Network has developed a number of scoring systems to try and pick it up at the earliest stage in patients.
"There are a series of cognitive tests to see if a patient is in the zone of delirium and that is what Frances has been experiencing, a condition called critical care delirium.
"There are a number of strategies which can be used to try and normalise the environment. Introducing night and day when that can be done, reducing sedation when possible and freeing patients from the equipment. That's something that we are trying to push forward here in Northern Ireland."
Dr Gardiner explained that, by definition, a patient in intensive care has a critical condition and that it is not surprising that the brain starts to malfunction in this way.
He understands how patients can begin to slip into delirium.
"By the very nature of the monitoring we have to do and the equipment that is needed to support your organ systems night and day it can be difficult to differentiate, there can be noises, there are alarms and there is always a stranger, albeit a nurse in the room with you," he said.
"Never the less it is quite common for patients, especially the more critical patients, to lapse into delirium and sometimes it can be quite difficult to pick that up."
Dr Gardiner has been involved in trying to reduce the chances of patients suffering from delirium.
"The strategy we employ in NI is to have the patient as lightly sedated as possible and move them out of intensive care as soon as possible. We are having good success at this.
"We never get the opportunity to let people know that delirium is a common effect of being in critical care and we are looking out for it and we can treat it. Most people will make a good recovery. It might take a bit of time but patients should be assured we are on top of the issue.
"We can treat this and people will get back to normal."

Output: It is a condition which is rarely talked about and most people are too embarrassed to mention it after they recover.


Input: Consider Input: She was banned after the FIS claimed she qualified for the 2014 Winter Olympics at fixed races, but the Court of Arbitration for Sport cleared her.
FIS apologised and has made "an appropriate" payment that the musician intends to donate to charity.
Vanessa-Mae, 37, was 67th and last in the giant slalom in Sochi competing for her father's native Thailand.
Reacting to the news of her damages, she told BBC Sport: "The fact that the International Ski Federation has apologised to me says it all."
British citizen Vanessa-Mae insists she will not allow the disruption to derail her bid to continue skiing and qualify for the 2018 Winter Olympics in Pyeongchang, South Korea.
In clearing the musician last June and overturning her four-year ban, the Court of Arbitration for Sport said qualifying races arranged at short notice in January 2014 were allowed by weak FIS rules and five officials were banned.
The panel said "a number of irregularities" occurred in the "organisation and management" of the four races which raised Vanessa-Mae's racer status.
But FIS admitted that the musician and her entourage "did not in any way fix, contrive or improperly influence the result, progress, conduct or any other aspect" of qualifying races in Slovenia.
The International Olympic Committee decided not to annul her result in Sochi after the ban was overturned.


Output: Violinist Vanessa-Mae has been awarded damages for defamation from the International Ski Federation (FIS).


