From National Geographic
Researchers investigated the hidden costs of water use by estimating the amount of H20 consumed per U.S. dollar of end product by different industrial sectors, including agriculture.For instance, it takes about 270 gallons 1,022 liters of water to produce a dollar’s worth of sugar, about 200 gallons 757 liters to make a dollar’s worth of pet food, and 140 gallons 530 liters to make a dollar’s worth of milk.
via Pet Food Sucking Up U.S. Water.
Did you know that Saturn’s moon Titan has volcanoes that spurt water?
Warm is a subjective term on Titan, where the average temperature is -290 degrees Fahrenheit (-179 degrees Celsius). One measure of the cold there is its volcanoes. While those on Earth spew molten rock, liquid water streams from Titan’s volcanoes.
“Let’s start with a very simple white puffy cloud – a cumulus cloud. How much does the water in a cumulus cloud weigh?
Peggy LeMone, senior scientist at the National Center for Atmospheric Research in Boulder, Colorado, did the numbers. “The water in the little cloud weighs about 550 tons,” she calculates. “Or if you want to convert it to something that might be a little more meaningful think of elephants.”
[source and more about clouds]
“Dolphins have a superior eyesight, whether they are in or out of the water, and their hearing is also far superior to that of a human.”
“Rainbows are visible due to water droplets in the air, with sunlight shining behind the observer.”
“The New River located in West Virgina, United States, is the second oldest river in the world, second only to the Nile River.”