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YouTube must now install filters to stop users from uploading music videos that violate rights of music-royalties collecting body, the German Hamburg's state court said, according to the Associated Press (reported in the Washington Post).

The court ruled against Google Inc.'s YouTube unit for "bear[ing] no legal responsibility for the uploaded content" and told YouTube to install filters to protect musicians' right, the Associated Press said.

But Google still sees the ruling as "a partial victory," according to the New York Times, because the judge, Henier Steeneck, despite telling Google to install the new program to stop violating copyright, agreed that Google was not directly responsible for the uploaded material. According to the Associated Press, the court ruled that the copyright violator is the user who uploaded the song. "There is no obligation to control all videos already uploaded to the platform," the court said, according to the Associated Press.

GEMA, the German association that sued Google Inc., also said "this is a victory," according to the New York Times.

The case started with GEMA suing Google over 12 illegally uploaded videos in 2010, according to the New York Times. Google is expected to appeal the ruling.

Scientists from the United States, the United Kingdom and Australia found, using satellite technology, the number of emperor penguins in Antarctica is twice than that they have expected, according to the Environment News Service.

The British Antarctic Survey, University of Minnesota/National Science Foundation, Scripps Institution of Oceanography and the Australian Antarctic Division joint together to do the counting from high-resolution satellite mapping technology, the Environment News Service said.

According to the Pioneer Press, the count of the entire emperor penguins population is the first-ever count from space and it provides an indicator for scientists to study the impact of environmental changes on the penguins.

Emperor penguins are not listed as threatened or endangered species by the International Union for Conservation of Nature and Natural Resources, but scientists say climate change is a threat to them, which breed in remote areas of Antarctica that reach temperatures as low as -58 degrees Fahrenheit, the Pioneer Press said. According to the Environment News Service, scientists are concerned that earlier spring warming is making some of the specie's colonies vulnerable since the sea ice habitat is lost in some regions.

Michelle LaRue, a researcher at the University of Minnesota's Polar Geospatial Center, told the Pioneer Press that the number of emperor penguins is easy to monitor using a satellite census because the specie is relatively immobile for months at a time during breeding season. "They're just really cool creatures, LaRue told the Pioneer Press.

A series of murders in a Paris suburb aroused fear for a serial killer, who "may be on the loose," the Associated Press said.

Four murders were committed using the same semiautomatic gun since November, prosecutor Marie-Suzanne Le Queau told the Associated Press during a news conference Friday. The latest murder was on Thursday, Le Queau said.

Interior Minister Claude Gueant was serious about chasing down the murderer, according to BBC News. Gueant "vowed all would be done to solve the case."

The motive for the latest shootings was still yet to be determined, according to BBC News. The gunman killed between 4:00 p.m. and 6:00 p.m., and fled the scene on a motorbike each time, Le Queau told BBC News.

Police were still investigating any connections between the victims, whom were all shot in the head, according to BBC News. Police were also investigating whether there were more than one murderer, the Associated Press said.

A Virginia man's 15 years living as a recluse ended with a full face transplant, which gave him a new face, nose, teeth and jaw, the San Francisco Chronicle said.

According to the San Francisco Chronicle, Richard Lee Norris, 37, received "the most extensive face transplant ever performed" in the University of Maryland Medical Center last week and is now recovering from the surgery, officials from the medical center announced Tuesday.

Norris's face was severely injured 15 years ago in a gun accident, causing him to lose hips lips and nose, and limited movement of his mouth, BBC News said. He wore a mask since then and only dared to shop at night, the San Francisco Chronicle said. The surgery, funded by the US Navy, will bring a new life to Norris, his lead surgeon told BBC News.

Dr. Eduardo Rodriguez, the lead surgeon, showed the San Francisco Chronicle during the announcement a 1993 photo of Norris, a pre-transplant photo and a photo after the surgery to show the results of the surgery.

"He could not smell for the past 15 years, and that was the most dramatic thing - immediately, on day three, he could finally smell," Rodriguez told the San Francisco Chronicle.

New discoveries were made about Mercury by MIT scientists and their Messenger mission, according to the Los Angeles Times.

Researchers at the Massachusetts Institute of Technology published Wednesday their new findings on "the smallest planet in the solar system" on the journal Science, the Los Angeles Times said. The researchers said Mercury may have been geologically active than previously imagined, the Los Angeles Times said.

According to BBC News, Messenger, the supercraft that brought home this data, was launched in 2004 and traveled near its target in March last year. Messenger sent pictures of Mercury's poles back to earth and showed scientists radar-bright features on Mercury, BBC News said.

MIT geophysicist Maria Zuber told the Los Angeles Times that the new discoveries shed light on "potentially habitable planets beyond our solar system."

A new study revealed children with sleep problems were more likely to develop behavioral problems, BBC News said.

The US journal Pediatrics published the study conducted on 11,000 children living in the UK, BBC News said. Researchers said toddlers who snore were more likely to develop behavioral problems at their school age, according to the CBS News.

The researchers followed the children from their six months to 7 years old and collected data using sleep surveys and behavioral assessment filled out by parents, according to CBS News.

Dr. Karen Bonuck, author researcher from the Albert Einstein College of Medicine at Yeshiva University in new York, said the children developed behavioral problems because of the reduce in supply of oxygen to the brain, affecting the functions of sleep as a "restorative process," according to BBC News.

Marianne Davey, a member of the British Snoring and Sleep Apnoea Society, told BBC News that parents often did not associate their children's poor behavior with sleep problems. Bonuck said parents should start to be mindful about how their children sleep and should consult a sleep specialist if they find their children snoring, CBS News said.

Hong Kong Chief Executive Donald Tsang is under investigation of corruption by a local commission and is facing a "possible impeachment effort by lawmakers," the New York Times said.

Mr. Tsang was accused of accepting trips to Macau and and Phuket, Thailand, on private jets and yachts owned by businessmen, according to Bloomberg. The Independent Commission Against Corruption received the complaint against Mr. Tsang last weekend and started investigating whether Mr. Tsang had accepted bribes, the New York Times said. Local news media reported Mr. Tsang was also "planning the below-market lease of a penthouse" in Shenzhen, China, according to the New York Times.

Mr. Tsang expressed his shock to "address questions about [his] integrity" in a letter to all members of the civil service, according to Bloomberg. He would be answering doubts about his trips, which he said he had paid for the rides, on Wednesday, according to Bloomberg.

Citizens were concerned about inappropriate influence in the government by business elite and their confidence in local leaders was shaken, the New York Times said. Public scrutiny of government officials have risen in recent years, Bloomberg said. Before Mr. Tsang's accusation, two candidates for the next chief executive Henry Tang and C.Y. Leung also faced "conflict-of-interest" scandals, the New York Times said.

A new study found mammals shrunk as a result of global warming, according to the State Column.

According to the New York Times, a team of researchers reported in the journal Science that they found - from fossil records - Sifrhippus, the first house, to shrink from about 12 pounds average to about eight and a half pounds as temperature rose over thousands of years.

Dr. Ross Secord of the University of Nebraska-Lincoln told the New York Times they predicted the phenomenon was part of natural selection. He said small animals might shed excess heat easier and had a better survivorship in warm climate.

The study raised concern on modern mammals, including humans, which were believed to be at risk of shrinking as a result of global warming, and questions on how plants and animals responds to climate change, according to the State Column.

A new study on goats' accent might bring new directions to intelligence agencies to understand how mammals form accents, the State Column reported.

The study done by Queen Mary University in London found goats changed their accents when they moved away from their siblings and formed new social circles, the State Column reported. They changed their accents to better communicate with animals in their new group, according to the State Column.

Researchers followed four groups of kids, New York Daily News reported. Researchers started recording the kids' voice when they were one week old and repeated when they were five weeks old, the time when they formed social groups, according to New York Daily News. The results showed goats raised in the same circle sounded more similar as they grew, the State Column said.

Goats are a new kind of mammals found to be able to acquire new accents from the surroundings, according to Scientific American. Most animals make sound according to their genes, except humans and a few other mammals, Scientific American said.

According to the State Column, the study could ultimately make possible for the U.S. Military and intelligence agencies to understand how accents are formed.

A study on spoon-fed and finger-fed babies published Monday in the British Medical Journal has raised interesting questions, according to the authors from the University of Nottingham in the United Kingdom, reported by the Los Angeles Times.

The study followed 155 children aged 20 months to 6 years old, according to the Los Angeles Times. Those eating finger foods during the weaning stage showed a preference on carbohydrates while those being spoon-fed with pureed foods - "cut-up pieces of soft table foods," according to the Los Angeles Times - preferred sweets. Obesity or overweight problems were more likely to occur in spoon-fed babies, reported the Los Angeles Times. Most of the children - finger-fed or spoon-fed - had a healthy weight when they reached adolescents, reported the BBC News.

Dr. Ellen Townsend, the leader of the research, told BBC News the weight difference might be due to the "age of introduction effect." "Carbohydrates are ideal finger foods," she said.

But spoon-feeding babies has its own advantage. It can protect babies from choking on baby foods, according to the Los Angeles Times. A few babies choked on their finger-fed food, reported the Los Angeles Times.

In addition, the study showed babies were more likely to pay attention to their appetites and develop control over food when they were allowed to feed themselves during weaning, reported the Los Angeles Times.

The study result could help to tackle problem of obesity in the U.K., Dr. Colin Michie, Chair of the Nutrition Committee at the Royal College of Paediatrics and Child Health, told BBC News.