The places along the equator are warmer than those closer to poles because On earth, the equator receives more sunshine than do the poles. This is due to simple geometry of the earth's curvature, a given amount of sunshine in a beam falling on the equator, which points directly at the sun, has a much more intense effect than the glancing rays spread over a much larger area of the curving surface near the poles. In addition, extensive ice and snow at the poles reflects back to space some of the sun's energy that reaches the earth. Much more sunshine is absorbed to heat the earth at the equator. This means the land at the equator becomes hotter than the poles. If we had no atmosphere or oceans, the equator would become too hot for life as we know it, and the poles too cold. However, the atmosphere and oceans take some of the excess heat from the equator to the poles, making both habitable to humans. An interesting connection to make is that if the earth were heated evenly at all latitudes there would be no winds or ocean currents.
