As the Northern Hemisphere welcomes spring today, the Southern Hemisphere is marked with the first day of autumn.

Daylight hours have been lengthening since late December, with February seeing a faster increase in sunlight. Northern regions experience a more dramatic change, while areas closer to the equator ...

On both equinoxes, the sun is exactly above the equator. Once the Earth hits its vernal equinox, the Northern Hemisphere moves into spring and the Southern Hemisphere moves into fall. The Earth ...

Temperatures drop the further an area is from the Equator due to the curvature of the Earth. In areas closer to the poles, sunlight has a larger area of atmosphere to pass through and loses more ...