When Neil Armstrong took his "one small step", the impression he made was lasting.
Can the Mississippi River change direction?
Today's Moment of Science is all about the role that glaciers play in giving those chilly lakes such incredible turquoise colors.
For billions of years, the Earth's only natural satellite has been bombarded with asteroids. Surely, it's been the target of space rocks in the past.
There are a few well known warning signs, such as earthquakes in the vicinity of a known volcano. And, of course, smoke rising from a volcano.
Fira is a typical Greek city overlooking the Aegean Sea but 35 hundred years ago, it was the site of one of the largest volcanic eruptions in historic times.
The Dead Sea has been drying up at alarming rates over the last century, dropping seventy five feet since the nineteen thirties.
Geothermal is a green power source and doesn't add carbon to the atmosphere the way fossil fuels do.
If you needed to know what the weather was like in Singapore tens of millions of years ago, you'd have to consult a different source.
It was one of the Earth's momentous times. Continents collided. Volcanoes erupted. Ocean currents shifted. Species ran amok.