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This is Scientific Americans 60-Second Science, Im Karen Hopkin. This will just take a minute. Blackjack, slot machines, good ol Texas holdem. People love to gamble. And were not the only ones. A new study shows that pigeons will also pass up a sure
Scientific American(十)月
By Cathy Majtenyi Nairobi 22 December 2006 The meaning and expression of Christmas is changing in Kenya, with more and more people buying expensive gifts and many choosing to stay in the city or go to the coast rather than travel to the country vill
2006年VOA标准英语（十二月）
LULU GARCIA-NAVARRO, HOST: In central Montana, drones are dropping peanut butter pellets on prairie dog colonies. As Yellowstone Public Radio's Nate Hegyi explains, it's part of an effort by biologists to save North America's most endangered mammal.
2017年NPR美国国家公共电台12月
An Iron ore index has now been launched here in China. As CRI's Wei Tong reports, it's designed to give Chinese companies a bigger say over the pricing of the key component in the production of steel in the international market. The index consists of
世界各地新闻集锦
China's iron ore manufacturers say they're struggling to keep their businesses afloat because of high costs and taxes while production is on the rise for the sector's global giants. Brazil's Vale SA is the world's largest iron ore producer and it say
cctv9英语新闻2015年
Iron ore prices slumped as much as 50 percent in 2014. Importers who are facing risks of further declines, are remaining cautious holding lower inventory levels. Shipping companies and steel producers are also suffering from the dampening market. It'
cctv9英语新闻2015年