At a conference in Paris in December 2015, almost 200 countries signed a landmark agreement designed to avoid the worst consequences of climate change. One key aim was to try to limit future global ...

In many regions, the warming climate is making air quality worse. Poorer air quality contributes to or may cause breathing problems and respiratory illnesses. Global warming has been associated with ...

In Paris in 2015, almost 200 countries signed a landmark agreement designed to avoid the worst consequences of climate change. But despite some progress in areas like renewable energy, the world has ...