There are four important warning signs that should prompt you to talk to a health care provider. 1  Pain. Pain from arthritis can be constant or it may come and go. 2  Swelling. Some types of arthritis cause the skin over the affected joint to become red and swollen, feeling warm to the touch. 3  Stiffness.
There's a whole lot of water on Earth! Something like 326,000,000,000,000,000,000 gallons (326 million trillion gallons) of the stuff (roughly 1,260,000,000,000,000,000,000 liters) can be found on our planet. This water is in a constant cycle -- it evaporates from the ocean, travels through the air, rains down on the land and then flows back to the ocean.
Well, 1 trillion gallons of water is: 1  the amount of water in about 40 million swimming pools. 2  the amount of water in about 24 billion baths. 3  the amount of water in Florida's Lake Okeechobee (669 square miles). 4  the amount of water used in one year by 11 million homes.