Do you know why volcanic ash is a problem for air travelers?
Earth and Space Science Concept of the Day
Do you know what this word or phrase means?
Magnetic polarity reversal
xMagnetic polarity reversal : A magnetic polarity reversal is a change of the earth's magnetic field to the opposite polarity. This has occurred at irregular intervals during geologic time.
As greenhouse gases build up in the atmosphere, more of the energy that gets to Earth from the Sun sticks around the planet. This means that the amount of energy coming to Earth is greater than the amount...Read more