Every January, Earth reaches its closest point to the Sun, known as perihelion. Yet, it’s winter in the Northern Hemisphere.

P erihelion – or the Earth's closest approach to our host star – will take place on January 3, 2026. At this point, our ...

When humans pump groundwater, it has a substantial impact on the tilt of Earth’s rotation. Additionally, a study documents just how much of an influence groundwater pumping has on climate change.

WASHINGTON — The summer solstice, the official start of summer, is on Friday, June 20. For those north of the equator, the solstice marks the longest day and the shortest night of the year. The Earth ...

For those north of the equator, the solstice on Sunday, Dec. 21, marks the shortest day and longest night of the year. During ...