12-11-28 My grandfather took me to the fish pond on the farm when I was about seven, and he told me to throw a stone into the water. He told me to watch the circles created by the stone. Then he asked me to think of myself as that stone. You may create lots...

12-11-26 Groundwater provides drinking water for millions of Americans and is the primary source of water to irrigate cropland（农田） in many of the nations most productive agricultural settings. Although the benefits of groundwater development are many, gr...

12-11-26 Near surface water has shaped the landscape of Mars. Areas of the planet's northern and southern hemispheres have alternately thawed（融解） and frozen in recent geologic history and comprise striking similarities to the landscape of Svalbard. This...

12-11-25 Ingredients 2 1/2 pounds of lean beef 3 pints cold water 2 tablespoons fine barley 1/2 cup of diced carrot 1 cup finely cut celery 1 cup boiling water 2 tablespoons of flour 1/2 teaspoon Worcestershire sauce 1 tablespoon ketchup salt and pepper to t...

12-11-21 A team of scientists, including Carnegie's Conel Alexander and Jianhua Wang, studied the hydrogen in water from the Martian interior and found that Mars formed from similar building blocks to that of Earth, but that there were differences in the lat...

12-11-20 Chemists at New York University have discovered a family of anti-freeze molecules that prevent ice formation when water temperatures drop below 32 degrees Fahrenheit. Their findings, which are reported in the latest issue of the Proceedings of the N...

12-11-18 Nearly three quarters of Venice was flooded on Monday and tourists swam in St Mark's Square as a wave of bad weather swept through northern and central Italy, forcing the evacuation of 200 people from their homes in Tuscany. 由于意大利北部和中部地区...

12-11-14 Heavy flooding in Italy has killed four people in Tuscany as rain caused rivers to break their banks, reports say. 降雨导致意大利托斯卡纳区的河堤崩溃，洪灾造成至少四人死亡。 Floods in Venice have left 70% of the historic port city under water Three...

12-11-14 Two men walked slowly, one after the other, through the shallow water of a stream. All they could see were stones and earth. The stream ran cold over their feet. They had blanket packs on their backs. They had guns, but no bullets; matches, but no f...

12-11-13 Erosion（侵蚀） caused by flowing water does not only smooth out objects, but can also form distinct shapes with sharp points and edges, a team of New York University researchers has found. Their findings, which appear in the latest edition of the j...