Weather describes at a given time and place what the atmospheric temperature, moisture, wind, and barometric pressure is doing, such as being hot, cold, windy or dry. When the weather is unusual, relating that to climate change can be difficult, because unusual weather is expected every now and then anyway. However, if the climate is warming, hot weather will happen more often and extremes will be hotter in the current decade than the previous decade. Extreme weather can have devastating consequences on humans and nature alike. Human activities such as agriculture and industry can also change the weather.