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It is said that the Inuit have many words for snow, but when it comes to the Northwest Passage only one type of frozen water matters: multiyear ice. It can slice through the hull of a ship like a knife through butter and it persists in the passage's waters despite unprecedented warming in the Arctic Ocean, thwarting shippers in search of a shortcut between Europe and Asia. The fabled Northwest Passage has made headlines ever since it thawed last year for the first time. For three centuries the quest for an expedited route between the Atlantic and Pacific oceans rivaled today's space race, with European superpowers vying for the prize. Hundreds of sailors and countless expeditions ventured into Canada's Arctic waters, including such naval luminaries as Sir Francis Drake, Captain James Cook and the ill-fated Henry Hudson, who left his name--and lost his life--on the Canadian bay that marks its entrance. [More] Rise and Fall of Chinese Dynasties Tied to Changes in Rainfall In the late ninth century a disastrous harvest precipitated by drought brought famine to China under the rule of the Tang dynasty. By A.D. 907--after nearly three centuries of rule--the dynasty fell when its emperor, Ai, was deposed, and the empire was divided. According to the atmospheric record contained in a stalagmite, one of the causes of that downfall may have been climate change. [More]

Tags: passage, northwest, water, arctic, dynasty

It is said that the Inuit have many words for snow, but when it comes to the Northwest Passage only one type of frozen water matters: multiyear ice. It can slice through the hull of a ship like a knife through butter and it persists in the passage's waters despite unprecedented warming in the Arctic Ocean, thwarting shippers in search of a shortcut between Europe and Asia. The fabled Northwest Passage has made headlines ever since it thawed last year for the first time. For three centuries the quest for an expedited route between the Atlantic and Pacific oceans rivaled today's space race, with European superpowers vying for the prize. Hundreds of sailors and countless expeditions ventured into Canada's Arctic waters, including such naval luminaries as Sir Francis Drake, Captain James Cook and the ill-fated Henry Hudson, who left his name--and lost his life--on the Canadian bay that marks its entrance. [More] Rise and Fall of Chinese Dynasties Tied to Changes in Rainfall In the late ninth century a disastrous harvest precipitated by drought brought famine to China under the rule of the Tang dynasty. By A.D. 907--after nearly three centuries of rule--the dynasty fell when its emperor, Ai, was deposed, and the empire was divided. According to the atmospheric record contained in a stalagmite, one of the causes of that downfall may have been climate change. [More]

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It is said that the Inuit have many words for snow, but when it comes to the Northwest Passage only one type of frozen water matters: multiyear ice. It can slice through the hull of a ship like a knife through butter and it persists in the passage's waters despite unprecedented warming in the Arctic Ocean, thwarting shippers in search of a shortcut between Europe and Asia. The fabled Northwest Passage has made headlines ever since it thawed last year for the first time. For three centuries the quest for an expedited route between the Atlantic and Pacific oceans rivaled today's space race, with European superpowers vying for the prize. Hundreds of sailors and countless expeditions ventured into Canada's Arctic waters, including such naval luminaries as Sir Francis Drake, Captain James Cook and the ill-fated Henry Hudson, who left his name--and lost his life--on the Canadian bay that marks its entrance. [More] Rise and Fall of Chinese Dynasties Tied to Changes in Rainfall In the late ninth century a disastrous harvest precipitated by drought brought famine to China under the rule of the Tang dynasty. By A.D. 907--after nearly three centuries of rule--the dynasty fell when its emperor, Ai, was deposed, and the empire was divided. According to the atmospheric record contained in a stalagmite, one of the causes of that downfall may have been climate change. [More]

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It is said that the Inuit have many words for snow, but when it comes to the Northwest Passage only one type of frozen water matters: multiyear ice. It can slice through the hull of a ship like a knife through butter and it persists in the passage's waters despite unprecedented warming in the Arctic Ocean, thwarting shippers in search of a shortcut between Europe and Asia. The fabled Northwest Passage has made headlines ever since it thawed last year for the first time. For three centuries the quest for an expedited route between the Atlantic and Pacific oceans rivaled today's space race, with European superpowers vying for the prize. Hundreds of sailors and countless expeditions ventured into Canada's Arctic waters, including such naval luminaries as Sir Francis Drake, Captain James Cook and the ill-fated Henry Hudson, who left his name--and lost his life--on the Canadian bay that marks its entrance. [More] Rise and Fall of Chinese Dynasties Tied to Changes in Rainfall In the late ninth century a disastrous harvest precipitated by drought brought famine to China under the rule of the Tang dynasty. By A.D. 907--after nearly three centuries of rule--the dynasty fell when its emperor, Ai, was deposed, and the empire was divided. According to the atmospheric record contained in a stalagmite, one of the causes of that downfall may have been climate change. [More]

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It is said that the Inuit have many words for snow, but when it comes to the Northwest Passage only one type of frozen water matters: multiyear ice. It can slice through the hull of a ship like a knife through butter and it persists in the passage's waters despite unprecedented warming in the Arctic Ocean, thwarting shippers in search of a shortcut between Europe and Asia. The fabled Northwest Passage has made headlines ever since it thawed last year for the first time. For three centuries the quest for an expedited route between the Atlantic and Pacific oceans rivaled today's space race, with European superpowers vying for the prize. Hundreds of sailors and countless expeditions ventured into Canada's Arctic waters, including such naval luminaries as Sir Francis Drake, Captain James Cook and the ill-fated Henry Hudson, who left his name--and lost his life--on the Canadian bay that marks its entrance. [More] Rise and Fall of Chinese Dynasties Tied to Changes in Rainfall In the late ninth century a disastrous harvest precipitated by drought brought famine to China under the rule of the Tang dynasty. By A.D. 907--after nearly three centuries of rule--the dynasty fell when its emperor, Ai, was deposed, and the empire was divided. According to the atmospheric record contained in a stalagmite, one of the causes of that downfall may have been climate change. [More]

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It is said that the Inuit have many words for snow, but when it comes to the Northwest Passage only one type of frozen water matters: multiyear ice. It can slice through the hull of a ship like a knife through butter and it persists in the passage's waters despite unprecedented warming in the Arctic Ocean, thwarting shippers in search of a shortcut between Europe and Asia. The fabled Northwest Passage has made headlines ever since it thawed last year for the first time. For three centuries the quest for an expedited route between the Atlantic and Pacific oceans rivaled today's space race, with European superpowers vying for the prize. Hundreds of sailors and countless expeditions ventured into Canada's Arctic waters, including such naval luminaries as Sir Francis Drake, Captain James Cook and the ill-fated Henry Hudson, who left his name--and lost his life--on the Canadian bay that marks its entrance. [More] Rise and Fall of Chinese Dynasties Tied to Changes in Rainfall In the late ninth century a disastrous harvest precipitated by drought brought famine to China under the rule of the Tang dynasty. By A.D. 907--after nearly three centuries of rule--the dynasty fell when its emperor, Ai, was deposed, and the empire was divided. According to the atmospheric record contained in a stalagmite, one of the causes of that downfall may have been climate change. [More]

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In the late ninth century a disastrous harvest precipitated by drought brought famine to China under the rule of the Tang dynasty. By A.D. 907--after nearly three centuries of rule--the dynasty fell when its emperor, Ai, was deposed, and the empire was divided. According to the atmospheric record contained in a stalagmite, one of the causes of that downfall may have been climate change. [More] Electronics Industry Changes the Climate with New Greenhouse Gas Emissions of a greenhouse gas that has 17,000 times the planet-warming capacity of carbon dioxide are at least four times higher than had been previously estimated. Nitrogen trifluoride (NF3) is used mainly by the semiconductor industry to clean the chambers in which silicon chips are made. The industry had in the past estimated that most of the gas was expended during the cleaning process and only about 2 percent escaped into the air. But the first-ever measurements of nitrogen trifluoride levels in the atmosphere, published recently in the journal Geophysical Research Letters show that emissions could be as high as 16 percent. [More]

Tags: industry, gas, greenhouse, climate, dynasty

It is said that the Inuit have many words for snow, but when it comes to the Northwest Passage only one type of frozen water matters: multiyear ice. It can slice through the hull of a ship like a knife through butter and it persists in the passage's waters despite unprecedented warming in the Arctic Ocean, thwarting shippers in search of a shortcut between Europe and Asia. The fabled Northwest Passage has made headlines ever since it thawed last year for the first time. For three centuries the quest for an expedited route between the Atlantic and Pacific oceans rivaled today's space race, with European superpowers vying for the prize. Hundreds of sailors and countless expeditions ventured into Canada's Arctic waters, including such naval luminaries as Sir Francis Drake, Captain James Cook and the ill-fated Henry Hudson, who left his name--and lost his life--on the Canadian bay that marks its entrance. [More] Rise and Fall of Chinese Dynasties Tied to Changes in Rainfall In the late ninth century a disastrous harvest precipitated by drought brought famine to China under the rule of the Tang dynasty. By A.D. 907--after nearly three centuries of rule--the dynasty fell when its emperor, Ai, was deposed, and the empire was divided. According to the atmospheric record contained in a stalagmite, one of the causes of that downfall may have been climate change. [More]

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It is said that the Inuit have many words for snow, but when it comes to the Northwest Passage only one type of frozen water matters: multiyear ice. It can slice through the hull of a ship like a knife through butter and it persists in the passage's waters despite unprecedented warming in the Arctic Ocean, thwarting shippers in search of a shortcut between Europe and Asia. The fabled Northwest Passage has made headlines ever since it thawed last year for the first time. For three centuries the quest for an expedited route between the Atlantic and Pacific oceans rivaled today's space race, with European superpowers vying for the prize. Hundreds of sailors and countless expeditions ventured into Canada's Arctic waters, including such naval luminaries as Sir Francis Drake, Captain James Cook and the ill-fated Henry Hudson, who left his name--and lost his life--on the Canadian bay that marks its entrance. [More] Rise and Fall of Chinese Dynasties Tied to Changes in Rainfall In the late ninth century a disastrous harvest precipitated by drought brought famine to China under the rule of the Tang dynasty. By A.D. 907--after nearly three centuries of rule--the dynasty fell when its emperor, Ai, was deposed, and the empire was divided. According to the atmospheric record contained in a stalagmite, one of the causes of that downfall may have been climate change. [More]

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In the late ninth century a disastrous harvest precipitated by drought brought famine to China under the rule of the Tang dynasty. By A.D. 907--after nearly three centuries of rule--the dynasty fell when its emperor, Ai, was deposed, and the empire was divided. According to the atmospheric record contained in a stalagmite, one of the causes of that downfall may have been climate change. [More] Electronics Industry Changes the Climate with New Greenhouse Gas Emissions of a greenhouse gas that has 17,000 times the planet-warming capacity of carbon dioxide are at least four times higher than had been previously estimated. Nitrogen trifluoride (NF3) is used mainly by the semiconductor industry to clean the chambers in which silicon chips are made. The industry had in the past estimated that most of the gas was expended during the cleaning process and only about 2 percent escaped into the air. But the first-ever measurements of nitrogen trifluoride levels in the atmosphere, published recently in the journal Geophysical Research Letters show that emissions could be as high as 16 percent. [More]

Tags: industry, gas, greenhouse, climate, dynasty

In the late ninth century a disastrous harvest precipitated by drought brought famine to China under the rule of the Tang dynasty. By A.D. 907--after nearly three centuries of rule--the dynasty fell when its emperor, Ai, was deposed, and the empire was divided. According to the atmospheric record contained in a stalagmite, one of the causes of that downfall may have been climate change. [More] Electronics Industry Changes the Climate with New Greenhouse Gas Emissions of a greenhouse gas that has 17,000 times the planet-warming capacity of carbon dioxide are at least four times higher than had been previously estimated. Nitrogen trifluoride (NF3) is used mainly by the semiconductor industry to clean the chambers in which silicon chips are made. The industry had in the past estimated that most of the gas was expended during the cleaning process and only about 2 percent escaped into the air. But the first-ever measurements of nitrogen trifluoride levels in the atmosphere, published recently in the journal Geophysical Research Letters show that emissions could be as high as 16 percent. [More]

Tags: industry, gas, greenhouse, climate, dynasty

In the late ninth century a disastrous harvest precipitated by drought brought famine to China under the rule of the Tang dynasty. By A.D. 907--after nearly three centuries of rule--the dynasty fell when its emperor, Ai, was deposed, and the empire was divided. According to the atmospheric record contained in a stalagmite, one of the causes of that downfall may have been climate change. [More] Electronics Industry Changes the Climate with New Greenhouse Gas Emissions of a greenhouse gas that has 17,000 times the planet-warming capacity of carbon dioxide are at least four times higher than had been previously estimated. Nitrogen trifluoride (NF3) is used mainly by the semiconductor industry to clean the chambers in which silicon chips are made. The industry had in the past estimated that most of the gas was expended during the cleaning process and only about 2 percent escaped into the air. But the first-ever measurements of nitrogen trifluoride levels in the atmosphere, published recently in the journal Geophysical Research Letters show that emissions could be as high as 16 percent. [More]

Tags: industry, gas, greenhouse, climate, dynasty

In the late ninth century a disastrous harvest precipitated by drought brought famine to China under the rule of the Tang dynasty. By A.D. 907--after nearly three centuries of rule--the dynasty fell when its emperor, Ai, was deposed, and the empire was divided. According to the atmospheric record contained in a stalagmite, one of the causes of that downfall may have been climate change. [More] Electronics Industry Changes the Climate with New Greenhouse Gas Emissions of a greenhouse gas that has 17,000 times the planet-warming capacity of carbon dioxide are at least four times higher than had been previously estimated. Nitrogen trifluoride (NF3) is used mainly by the semiconductor industry to clean the chambers in which silicon chips are made. The industry had in the past estimated that most of the gas was expended during the cleaning process and only about 2 percent escaped into the air. But the first-ever measurements of nitrogen trifluoride levels in the atmosphere, published recently in the journal Geophysical Research Letters show that emissions could be as high as 16 percent. [More]

Tags: industry, gas, greenhouse, climate, dynasty

In the late ninth century a disastrous harvest precipitated by drought brought famine to China under the rule of the Tang dynasty. By A.D. 907--after nearly three centuries of rule--the dynasty fell when its emperor, Ai, was deposed, and the empire was divided. According to the atmospheric record contained in a stalagmite, one of the causes of that downfall may have been climate change. [More] Electronics Industry Changes the Climate with New Greenhouse Gas Emissions of a greenhouse that has 17,000 times the planet-warming capacity of carbon dioxide are at least four times higher than had been previously estimated. Nitrogen trifluoride (NF3) is used mainly by the semiconductor industry to clean the chambers in which silicon chips are made. The industry had in the past estimated that most of the gas was expended during the cleaning process and only about 2 percent escaped into the air. But the first-ever measurements of nitrogen trifluoride levels in the atmosphere, published recently in the journal Geophysical Research Letters show that emissions could be as high as 16 percent. [More]

Tags: industry, gas, greenhouse, climate, dynasty