1.   As the molten earth cooled a bit, widespread volcanism began to disperse water vapor and other gases, producing a thick atmosphere and vast oceans.

2.   As the earth cools, air in contact with the ground also cools.

3.   But the earth cooled, the Atlantic Ocean retreated and tons of sand were left behind here in these gentle hills.

4.   In those ancient days long before the earth had cooled, when the mighty pterodactyl still ruled the darkling skies, I took my first job in television news.

5.   Radiation refers to the process by which the earth cools through the net loss of infrared radiation.