In the last 120 years, the Earth’s dipole moment has decreased ... the magnetic poles have crossed from the Western Hemisphere to the Eastern Hemisphere, while in the Southern Hemisphere ...
Or be patient: Starting Sunday, days will get a little bit longer in the Northern Hemisphere every single day until late June. These annual changes in sunlight as the Earth revolves around the sun ...
a grass-like family that today is limited to the Southern Hemisphere tropics; Eotrigonobalanus, an extinct genus of the Beech Family that formerly ranged across eastern North America and Europe ...