Clouds are big

According to Israeli scientists, clouds are much bigger than we can see with the naked eye. As anyone who has moved from New England to southern California can attest, clouds have a large impact on temperature. During the day clouds reflect some of the sun's light back into space, cooling the ground. At night, heat radiating from the ground is reflected back by clouds, keeping the ground warm. Because of this, clouds are important factors in predicting climate change, and some scientists (though not a "consensus") claim that the impact of cosmic rays on cloud cover is a driving force in climate.