Earth Day was recently celebrated on Tuesday, April 22, an annual effort at environmental awareness, which started in April of 1970. Earth Day is more than just taking pretty pictures and posting them ...

Water is the only substance that is present in the atmosphere that exists in solid, liquid and gaseous states. The water cycle is the process that moves water around the Earth, and is essential for ...

"Saturn's largest moon, Titan, stands out as a dynamic, icy oceanic world featuring Earthlike hydrocarbon reservoirs that cycle through ... hydrocarbons rather than water. The idea hasn't gained ...