太陽能熱水器 (1)

科學(xué)60秒:牡蠣味鮮美 環(huán)保價(jià)更高

The Chesapeake Bay could get helped by a new antipollution expert: farmed oysters. For decades, the Chesapeake has been ___1___ by excess nutrients, such as nitrogen, from agricultural and munici...

軍事：胡德堡槍擊受傷士兵獲紫心勛章

軍事：胡德堡槍擊受傷士兵獲紫心勛章Congress considers a new bill that would make some soldiers eligible for the Purple Heart. Representative John Carter introduced the new legislation yesterday.

流行性感冒 (1)

Alvin Nelson El Amin Autumn and winter are cold and flu season -- when people are most likely to catch the viruses that cause influenza and the common cold. Is the old advice true that dressing w...

金融次貸危機(jī)波及全球銀行 (1)

Sweden SwitzerlandThis week, economic worries turned from inflation. On Wednesday, central banks in nations around the world acted together to lower interest rates. The fear is that a lack of cr...