Scientists accidentally create a plastic-eating enzyme

American and British scientists accidentally devised an enzyme that could destroy plastic, which could help solve the global problem of this type of pollution, according to a study released on Monday.

More than eight million tons of plastics end up in the world's oceans every year, raising concerns about the toxicity of this petroleum derivative and its impact on the health of future generations and the environment.

Despite efforts to recycling, the vast majority of these plastics can last for hundreds of years. Scientists are looking for a better way to eliminate them

Scientists at the Portsmouth University of the United Kingdom and the National Renewable Energy Laboratory of the US Department of Energy have focused their efforts on a bacterium discovered in Japan a few days ago. years: Ideonella sakaiensis.

It feeds only on one type of plastic, polyethylene terephthalate (PET), which is used in many plastic bottles.

Japanese researchers believe that bacterium has evolved quite recently in a recycling center, because plastics were invented only in the 1940s.

The goal of the US-UK team was to understand the functioning of one of its enzymes called PETase, discovering its structure

"But they went a step further by accidentally designing an enzyme that is even more effective at breaking down the s PET plastics, "according to the findings published Monday in the Proceedings of the American Academy of Sciences (PNAS).

Scientists from the University of South Florida and the Brazilian University Campinas also participated in the experiments which led to the mutation by chance of a much more efficient enzyme than natural PETase.

Scientists are now busy improving their performance in hopes of eventually being able to use it in an industrial process. destruction of plastics.

"Luck is often an important part of basic scientific research and our discovery is no exception," said John McGeehan, a professor at the School of Biological Sciences in Portsmouth.

"Although the advance is modest, this unexpected discovery suggests that there is room to further improve these enzymes, to bring us even closer to a recycling solution. growing mountain of discarded plastics, "he continued.

China will create a giant park for its pandas

China will create a huge natural park for its pandas: an area close to that of Belgium, it aims to group specimens and encourage their reproduction, said Thursday an official newspaper.

The State will devote at least 10 billion yuan (1.27 billion euros) over the next five years to the construction of the National Park for the giant panda in the mountains of the southwest of the country, traditional place of life of the Ursid, according to the China Daily.

The black and white coat and round-eared mammal sanctuary will cover more than 27,000 km2, an area equivalent to that of Sicily or Belgium.

The goal is to push the currently isolated panda communities in three provinces of China to mix and breed.

This is not an easy task: these ursids have the reputation of being clumsy during mating, which is often far too fast for the female to be fertilized. Moreover, the latter is receptive only two or three days a year to the advances of his partner.

The International Union for the Conservation of Nature (IUCN) released the animal from the list of endangered species in September 2016, highlighting the effectiveness of China's efforts to save the mammal. However, the species remains "vulnerable."

More than 80% of the world's wild pandas are in southwest China's Sichuan province, and the rest in neighboring Shaanxi and Gansu provinces further north.

The park's financing was validated on Tuesday after an agreement between China's Bank of China and the Sichuan Forest Service, China Daily said. The envelope will be used to finance poverty reduction programs in the areas concerned and to build the park's new infrastructure.

The Death of an Infected Master Flu Create Antivirus Drug So Highlights

Myanmar Failed to Create Safe Conditions for Return of Rohingya Refugees

UN High Commissioner for Refugees Filippo Grandi said on Monday that Myanmar had failed to create a safe condition for the return of 688,000 Muslims-Rohingyas who fled from military crackdown six months ago.

Refugees taking shelter in emergency camps in Bangladesh despite an agreement between Myanmar and Bangladesh that allowed their return to the state of Rakhine.

"Typically, this condition for the voluntary repatriation of Rohingya refugees is still not conducive," said Grandi, speaking through videoconferences at the council meeting.

"The thing that caused them to evacuate has not been addressed, and we still have not seen any substantive progress in addressing the issue of exceptions and denial of the rights of the deceased Muslims-Rohingyas, rooted in their citizenship , "He added.

See also: Jo kowi Visit Rohingya Refugees in Bangladesh

Myanmar considers Muslim-Rohingyas as immigrants from Bangladesh and refuses to grant citizenship, even though this group has been in Myanmar for generations.

An advisory panel led by former UN secretary-general Kofi Annan has called on Myanmar to grant citizenship to Muslim-Rohingyas and allow them back.

The United Nations has accused Myanmar forces of expelling the Rohingyas in an ethnic cleansing campaign.

China, former supporters "The Muslim-Spirit Crisis can not be completed in one night," said Chinese Ambassador Ma Zhaoxu.

He added that, steps should be adopted by Myanmar "to address the root causes of poverty through pemba ngunan "in Rakhine state. [em/jm]

Norovirus Create Anxious Olympic Officials

Posters around the Olympic venues advise high vigilance. Nine hundred troops were deployed to the area to help. The worried organizers imposed a 1,200-person quarantine and they were required to stay in their rooms.

Officials had trouble on the eve of the biggest event ever planned in South Korea over the years – not because of things related to North Korea and national security, but in an effort to ward off the spread of norovirus in Pyeongchang matches.

Local media are concerned about "panic virus". South Koreans are always quick to voice their opinions on the internet, rollicking scornful responses and government preparations. Is the game hygienic? What will people say about South Korea? Will this spread to athletes?

Fear of Norovirus may be unwarranted. But with a national reputation, officials are still working hard to block its spread. No one wants these games to be associated with diseases such as Zika, mosquito-borne diseases that cause birth defects and infestation at the Rio Games in 2016.

Noroviruses are contagious viruses that cause unpleasant symptoms including diarrhea and vomiting but do not require treatment medical; most people cured themselves after a few days.

The major outbreaks of this disease were previously reported in restaurants, yachts, nursing homes, schools and building complexes using the same water source.

According to Olympic organizers, the spread of norovirus begins on Sunday when private security workers living in the Jinbu district of Pyeongchang began complaining of headaches, stomach aches and diarrhea. About 1,200 people are encouraged to stay in their rooms during the infectious virus test. Local and national health officials said they had investigated 1,023 people.

Olympic organizers said on Wednesday that 32 workers were treated for norovirus and quarantined, including three foreigners. Because of the sick workers handling security, 900 military personnel were deployed in 20 locations until the sick and were encouraged to stay in their rooms could return to work.

Officials conducted epidemiological surveys to track the spread of the disease. The previous five-day survey of water for cooking and drinking showed negative norovirus. Health officials also said they examined restaurants and all Olympic-related food facilities.

Noroviruses usually spread through contaminated food or water, close contact with an infected patient or by touching surfaces or contaminated objects; the virus can survive outside the body for several days. There is no special medical treatment for this virus even though doctors advise people to drink plenty of fluids to avoid dehydration.

To prevent further spread of health workers recommending frequent hand washing and cleaning of contaminated surfaces. They also advise patients to stay away from public places until at least two days after their illness has healed. [my/jm]