As temperatures drop and windows close, air quality tends to worsen. Add in more baking, more fires, more candles and more gas heating and the winter months can prove bad for your lungs, especially if ...

The growing availability of low-cost air quality sensors is helping people across the world track air pollution.

CNN’s Fear & Greed Index is a way to gauge stock market movements and whether stocks are fairly priced. The index uses seven market indicators to help answer the question: What emotion is driving the ...