When a big credit card bill arrives, the stress doesn't always stay with the person who opened it. In a new study of unmarried couples, money worries tended to carry over into how tense the relationship felt. Comfort made a difference. People who said the... See more
When a big credit card bill arrives, the stress doesn't always stay with the person who opened it. In a new study of unmarried couples, money worries tended to carry over into how tense the relationship felt. Zhongchi Li, a graduate student in psychology ... See more
For more than two billion years after Earth formed, its air held almost no oxygen. Deep underground, in the thick layer of hot rock called the mantle, things were already changing. Crystals as old as 3.4 billion years show the mantle becoming more oxidize... See more
For more than two billion years after Earth formed, its air held almost no oxygen. Deep underground, in the thick layer of hot rock called the mantle, things were already changing. Crystals as old as 3.4 billion years show the mantle becoming more oxidize... See more
Most people expect fall allergies to fade once the leaves start turning. Ragweed doesn't keep that schedule. The weed releases pollen until a hard frost kills it, and in most U.S. cities, the frost-free fall stretch is longer now than it was in 1970. That... See more
