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NASA's Juno Spacecraft Shows the Makeup of Jupiter Scientists are finding that the inside of Jupiter is just as interesting as the part of the planets atmosphere that we can see. At the center of the planet is a liquid mixture of the elements hydroge

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Lesson 20， Scourge of the Plains： Tornadoes 平原之祸－龙卷风 Ellen Mae stepped out of her two-story home in certral Illinois. Fine morning， sae said to herself after checking the weather， and then went back inside. The radio had mentioned a seve

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1. Investigators are conducting tests to determine if a shooting at a Marine Corps recruiting station is connected to recent shootings at the Pentagon and National Marine Corps Museum. The FBI says the same gun was used to shoot at the Pentagon and t

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This is the VOA Special English Development Report. Bacterial meningitis must be treated with antibiotics as soon as possible or the infection can cause hearing loss and brain damage. It can also kill. File photo of a girl being vaccinated against m

VOA慢速英语 2007 0918b

VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English. Im Shirley Griffith. VOICE TWO: A NOAA satellite image of Hurricane Katrina, taken on August 29, 2005 And Im Steve Ember. Powerful storms are called hurricanes when they form over the At

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AS IT IS 2016-10-09 Ocean 'Blob' Caused Dangerous Algae Bloom 海洋斑点引发赤潮 Tiny water plants called phytoplankton serve as food for many sea creatures, including whales, shrimp, jellyfish and snails. 微型浮游植物是许多海洋生物的

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Sea Levels and Arctic Temperatures Rise 北极温度与海平面同上升 Scientists found sea levels are rising faster today than anytime over the past 3,000 years. Another group of scientists found that January temperatures in the Arctic hit a reco

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Off the coast of Boston, scientists scan the horizon for something largehumpback whales. In the busy waters of the Stellwagen Bank, National Marine Sanctuary, whales must navigate around submerged fishing gear. And on the surface, collisions to the s

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The twilight zone refers to the area between 100 and 1000 metres deep where a small amount of sunlight can still penetrate. The region is packed with ocean life that plays a key role in keeping atmospheric carbon-dioxide levels 30-percent lower than

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Absurdly, he was excluded from a 1971 National Research Council panel appointed to investigate the dangers of atmospheric lead poisoning even though he was by now unquestionably the leading expert on atmospheric lead. 荒唐的是，一个美国研究委

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As always, however, nothing was quite as straightforward as such a breezy description makes it sound. Meteorites are not abundant and meteoritic samples not especially easy to get hold of. Moreover, Brown's measurement technique proved finicky in the

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Rather than restate every one, scientists decided to keep the inaccurate constant. Thus, Tim Flannery notes, every raw radiocarbon date you read today is given as too young by around 3 percent. The problems didn't quite stop there. It was also quickl

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One of the oddities of our solar system is that the Sun burns about 25 percent more brightly now than when the solar system was young. 现在太阳燃烧的旺度，要比太阳系形成之初强了大约25%，这是我们太阳系的怪事之一。

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16.The early railroads were........the existing arteries of transportation: roads,turnpikes, canals,and other waterways. A.those short lines connected B.short lines that connected C.connected by short lines D.short connecting lines 答对率：50% 答案