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BEIJING, Sept. 6 (Xinhuanet) -- The amount of space junks floating in Earth's orbit has reached a critical level, warned scientists.The future space missions may become too dangerous to fly for a risk of colliding with space junks, said a report released recently by the U.S. National Research Council (NRC).The kinds of space junks range from huge, the report said, there are thousands of discarded satellites and rocket boosters and countless tiny pieces of daily gabages from space missions.The debris are traveling in orbit at 17,500mph, at such a speed even a tiny clash can destroy a spacecraft.The NRC recommended that NASA should launch a plan to clean up the floating debris and called on other major space nations' cooperation."The current space environment is growing increasingly hazardous to spacecraft and astronauts," said Kessler, an ex-NASA researcher, "NASA needs to determine the best path forward for tackling the multifaceted problems caused by meteoroids and orbital debris that put human and robotic space operations at risk."

RIO DE JANEIRO, July 28 (Xinhua) -- Brazilians are eating a lot of rice and beans as well as high-calorie junk food lacking nutrition, a study released Thursday by the Brazilian Institute of Geography and Statistics (IBGE) found.According to the study, over 90 percent of Brazilians eat daily helpings of fruits and vegetables lower than the levels recommended by the Health Ministry (400 grams). Also,the consumption of sugary drinks (juices, fruit drinks and soft drinks) is twice as high as recommended by the ministry.Rice and beans, along with coffee and juices, are the most popular in Brazilians' diet. Teenagers are the main consumers of those drinks, drinking twice as much as adults. Men eat less greens and fruits than women, but drink five times more alcohol.In urban areas, the consumption of beer, soft drinks, sandwiches, and salty bread is higher. Brazilians in rural areas have a healthier diet, richer in rice, beans, fish, cassava flour, and sweet potatoes.Along with a lack of physical activity, the Brazilians' poor diet was cited as one of the main causes of obesity in the country. According to a Health Ministry study published in April, 48 percent of Brazilians are overweight, and 15 percent are obese.

BEIJING, Sept. 2 (Xinhuanet) -- Insomnia costs average U.S. worker 11.3 days, or 2,280 dollars, in lost productivity each year, according to a new study published in journal Sleep.The total cost to the nation is 63.2 billion dollars annually, the study said.Researchers analyzed information about sleep habits and work performance from 7,428 workers taking part in Harvard Medical School's American Insomnia Study survey in 2008-09.As a result, 23.2 percent of the participants suffered insomnia, characterized by a hard time falling or staying asleep.Moreover, insomnia rates were 19.9 percent for those with less than a high school education and 21.5 percent for college graduates."We were shocked by the enormous impact insomnia has on the average person's life," said Ronald C. Kessler, a lead author and a psychiatric epidemiologist at Harvard Medical School."It's an underappreciated problem. Americans are not missing work because of insomnia. They are still going to their jobs but accomplishing less because they're tired," Kessler noted.Employers usually ignore the consequences of insomnia because it's not considered an illness resulting in workers' absenteeism.But the high cost of lost sleep identified in this study indicates that employers need to take it more seriously.

DUBLIN, June 27 (Xinhua) -- The Irish government is aiming to increase internet literacy among older people with the launch of a 1.6 million euro training program, according to a cabinet minister on Monday.The goal of the scheme is to provide basic internet skills to 30,000 elderly people across the country who are less likely engage with the internet themselves.The announcement was made by Irish communications minister Pat Rabbitte at a new computer training facility run by Age Action Ireland, an Irish charity which promotes positive aging and better policies and services for older people.The Irish minister detailed how the training program will help those involved."This scheme will enable thousands of people throughout Ireland, people otherwise likely to be left behind in the knowledge society, to acquire the basic practical know-how to improve their digital skills. In particular this will help older people, those with disabilities, the unemployed and other key target groups. They will learn to use the internet, emails and how to conduct simple on-line transactions," he said."Previous schemes show that learning such basic skills helps people in many ways, giving them new communication options, new opportunities to save money, as well as better access to a wide range of on-line services," he added."We have also seen how such new skills and the opportunities that result from them improve people's confidence and wellbeing. More widespread participation in the knowledge society is a win- win outcome with advantages for citizens, government and the wider economy."

LOS ANGELES, July 5 (Xinhua) -- NASA's Juno spacecraft is 30 days away before its first launch window opens, the Jet Propulsion Laboratory (JPL) announced on Tuesday."One month from today, our first launch window opens at 11:34 a. m. EDT (8:34 a.m. PDT) and lasts 69 minutes," said Jan Chodas, Juno project manager from NASA's JPL in Pasadena, Los Angeles."Our primary launch period is 22 days long, and so if weather or other issues come up on Aug. 5, we have 21 more days to get Juno flying. Once we get Juno into space, it's a five-year cruise to Jupiter.""The launch window is the length of time allotted every day for an attempt to launch the spacecraft," said Chodas. "The launch period is the period of time in days when everything is in the right place to get your mission off to the right start."For a mission like Juno, getting everything in the right place includes considering the size of the rocket and spacecraft, where our home planet -- and in particular Juno's launch pad -- is pointed at any moment, and its location in space relative to other celestial objects like Juno's final target, Jupiter.Juno is scheduled to launch aboard a United Launch Alliance Atlas V rocket from pad 41-C at the Cape Canaveral Air Force Station, Florida.The solar-powered spacecraft will orbit Jupiter's poles 33 times to find out more about the gas giant's origins, structure, atmosphere and magnetosphere and investigate the existence of a solid planetary core.JPL manages the Juno mission for the principal investigator, Scott Bolton, of Southwest Research Institute in San Antonio.The Juno mission is part of the New Frontiers Program managed at NASA's Marshall Space Flight Center in Huntsville, Alaska. Lockheed Martin Space Systems, Denver, built the spacecraft.