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Threat of Creeping Lava Has Hawaiians on Edge 夏威夷火山持续喷发 熔岩威胁附近居民区 PAHOA, HAWAII Hawaii's Kilauea, one of the most active volcanos on Earth, has been erupting for more than 30 years. But lava from a vent near Pahoa
Heat-resistant Glassware Celebrates 100th Anniversary 耐热玻璃器皿诞生100周年 One hundred years ago, a new brand of kitchenware named Pyrex entered the American market, firmly imprinting its name into the psyche of consumers. It is still be
play pause stop mute unmute max volume 00:0002:40repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update your Flash plugin. Problems and progress in space. First, the setback for N
What country has more historically active volcanoes than any other? 历史上哪个国家活火山最多? United States, Indonesia, Japan or Philippines? 美国、印尼、日本还是菲律宾? According to the U.S. Geological Survey, there are more
耐热玻璃器皿诞生100周年 One hundred years ago, a new brand of kitchenware named Pyrex entered the American market, firmly imprinting its name into the psyche of consumers. It is still being manufactured while the early models are now collec
Breathing from a so-dubbed scuba unit and now fitted in a cross between a super ski suit and a haz-mat coverall, future Titannauts could explore with confidence. You just need that thermal protection and oxygen, and then you can play on the surface a
By Paul Sisco Washington 14 November 2007 At the McDonald Observatory in western Texas, a unique space program has been quietly underway for more than 30 years. It is called the Lunar Laser Ranging Program. VOA's Paul Sisco has more. Research scienti
The Prime Minister Tony Abbott is facing a growing backlash over that decision to award an Australian Day knighthood to Prince Philip. Two Queensland MPs Ewen Jones and Warren Entsch publicly criticized the move. In reaching the decision, Mr. Abbott
Parallax 视差就是从有一定距离的两个点上观察同一个目标所产生的方向差异。从目标看两个点之间的夹角,叫做这两个点的视差,两点之间的距离称作基线。只要知道视差角度和基线长度,就