Today, the average day is 24 hours long, but is increasing by about 1.7 milliseconds every century.
About 600-800 million years ago, Earth underwent several extreme climate changes known as ice ages. The climate became so cold that some scientists believe Earth nearly or completely froze several times.
Ironically, the driest place in the world is the Atacama Desert in northern Chile. It is next to the biggest body of water the Pacific Ocean.
Earth's gravity isn't uniform. The planet's surface is bumpy, and water flow, ice drift and the movement of the tectonic plates beneath Earth's crust all change the pull of gravity. These variations are known as gravity anomalies.
Our sun has a voracious appetite.. As the sun exhausts its supply of hydrogen, it will collapse under gravity.
The moon is not Earth's only companion.There are two other bodies orbiting near Earth that are sometimes referred to as moons, though they are not strictly worthy of the title.
Lakes Can Explode. But Africa has experienced just that sort of thing over the years, when bursts of volcanic gases rise to the surface, leaving destruction in their wake.
Earth Used to Be Purple. The ancient microbes may have relied on a molecule called retinal, rather than chlorophyll, to absorb the sun's rays