Solar Electricity Production Grows in Africa, with U.S. HelpIn many parts of Africa, communities have electricity ... [查看全文]
NASA Developing Food Bars for Mars FlightsWhen astronauts go to the planet Mars years from now, they will need ... [查看全文]
A Visit to the Virtual World參觀虛擬世界Virtual reality, or VR, is a powerful, new technology.虛擬... [查看全文]
AIDS Vaccine Testing Taking Place in South Africa南非開展艾滋病疫苗臨床試驗(yàn)Thursday is World AIDS Da... [查看全文]
Weather Predictions Expected to Improve with New U.S. Satellite美國新衛(wèi)星有望改善天氣預(yù)報(bào)A new Americ... [查看全文]
What do Spider Webs and Guitar Strings Have in Common?蜘蛛網(wǎng)和吉它弦的共同之處Spider webs have some... [查看全文]
Pulp from Plants Makes Packaging More Earth-FriendlyThe average American throws away about 84 kilos of plastic eve... [查看全文]
Juno Gets a Close-up Look at JupiterThe spacecraft Juno successfully passed close to Jupiter Saturday as it orbit... [查看全文]
A Laboratory Turns Deadly Insect Venom into Medicine一家實(shí)驗(yàn)室將致命昆蟲毒液轉(zhuǎn)化為藥物To most of us,... [查看全文]
Ancient Earth Had More Oxygen than Scientists ThoughtResearchers say the Earth had much more oxygen nearly a bill... [查看全文]