By Nancy-Amelia Collins A World Health Organization official has warned of the likelihood of more human deaths from the bird flu virus, after the death of a teenage boy in Thailand this week. On Wedne

发表于:2019-01-04 / 阅读(75) / 评论(0) 分类 VOA2004(下)--健康科技

By Greg Flakus Scientists in Texas are trying to find a way of reducing carbon dioxide air pollution by capturing the gas, compressing it and then putting it underground. This technique could also yie

发表于:2019-01-03 / 阅读(73) / 评论(0) 分类 VOA2004(下)--健康科技

By Peta Thornycroft Water rationing has been imposed in Zimbabwe's capital, where water shortages have reached critical levels. Half the city's four-million residents are either short of water or have

发表于:2019-01-03 / 阅读(84) / 评论(0) 分类 VOA2004(下)--健康科技

By Steve Herman Man's quest to track time accurately dates back thousands of years. The ancient Egyptians devised the sundial and the water clock. The Babylonians divided the hour and minute into 60 p

发表于:2019-01-03 / 阅读(65) / 评论(0) 分类 VOA2004(下)--健康科技

By Lisa Schlein The UN Children's Fund, UNICEF, says Iodine Deficiency Disorders, which cause mental retardation, are a huge problem in Europe and Central Asia. UNICEF says this disorder can be solved

发表于:2019-01-03 / 阅读(82) / 评论(0) 分类 VOA2004(下)--健康科技

By Rosanne Skirble Coral reefs are home to the greatest diversity of plant and animal life found in any habitat, anywhere on the earth. But, while they are found in 101 countries and territories, the

发表于:2019-01-03 / 阅读(84) / 评论(0) 分类 VOA2004(下)--健康科技

By David McAlary Researchers have shown that it may be possible to prevent sexual transmission of the AIDS virus HIV with a compound now in the experimental stage. Female monkeys who received it vagin

发表于:2019-01-03 / 阅读(62) / 评论(0) 分类 VOA2004(下)--健康科技

By David McAlary The U.S. Cassini spacecraft orbiting Saturn has found evidence that the giant planet's dazzling rings are decaying and may eventually be gone. And the rings are dirtier than thought,

发表于:2019-01-03 / 阅读(87) / 评论(0) 分类 VOA2004(下)--健康科技

By Brian Byrnes More than 6,000 delegates from 194 nations have gathered in the Argentine capital of Buenos Aires for the 10th annual United Nations Convention on Climate Change. Monday's opening cere

发表于:2019-01-03 / 阅读(178) / 评论(0) 分类 VOA2004(下)--健康科技

By Carrie Giardino The government of Chad is calling for international assistance to fight a cholera outbreak in the country. The World Health Organization says it is concerned that the disease could

发表于:2019-01-03 / 阅读(81) / 评论(0) 分类 VOA2004(下)--健康科技

By David McAlary U.S. astronomers have made a finding they say increases the chance that distant stars may harbor planetary systems like our own. They have discovered two planets the size of Neptune e

发表于:2019-01-03 / 阅读(81) / 评论(0) 分类 VOA2004(下)--健康科技

By David McAlary As the prevalence of heart disease increases worldwide, researchers have found that people in developing countries suffer from it for the same reasons people in industrial nations do.

发表于:2019-01-03 / 阅读(67) / 评论(0) 分类 VOA2004(下)--健康科技

By David McAlary The U.S. space agency, NASA, launched a satellite Saturday that scientists hope will help them locate the sources of mysterious gamma ray explosions, the brightest most energetic burs

发表于:2019-01-03 / 阅读(103) / 评论(0) 分类 VOA2004(下)--健康科技

By David McAlary The U.S. space agency is planning to conduct its first completely automated rendezvous in space Tuesday. In a test of new technology, a spacecraft is scheduled to be launched to track

发表于:2019-01-03 / 阅读(84) / 评论(0) 分类 VOA2004(下)--健康科技

By David McAlary Scientists have discovered fossils of an ancient, tiny species of human in an isolated part of Indonesia. They are bones from what they say is a smaller version of the now extinct imm

发表于:2019-01-03 / 阅读(110) / 评论(0) 分类 VOA2004(下)--健康科技

By Jessica Berman The U.S. space agency has released the first close-up pictures of Titan, Saturn's secretive, giant moon. Photos from the international Cassini spacecraft show the orbiting object shr

发表于:2019-01-03 / 阅读(64) / 评论(0) 分类 VOA2004(下)--健康科技

By David McAlary Ocean animals in parts of Antarctica are facing a food shortage. A new British study finds that a staple of the marine wildlife diet, tiny shrimp-like creatures called krill, has dram

发表于:2019-01-03 / 阅读(80) / 评论(0) 分类 VOA2004(下)--健康科技

By David McAlary A new U.S. study highlights more negative health effects women might suffer if they take hormone supplements to combat the symptoms of aging. We know that taking the female hormones e

发表于:2018-12-08 / 阅读(73) / 评论(0) 分类 VOA2004(下)--健康科技

David McAlary For weeks, two helicopter crews have been practicing the mid-air capture of a parachute drifting down over the Utah desert. When the event acttually occurs Wednesday, the parachute will

发表于:2018-12-08 / 阅读(63) / 评论(0) 分类 VOA2004(下)--健康科技

By Lisa Schlein The World Health Organization says Hepatitis E is sweeping camps for internally displaced people in the western Darfur province of Sudan. The agency says it has confirmed more than 620

发表于:2018-12-08 / 阅读(73) / 评论(0) 分类 VOA2004(下)--健康科技