How far away is the Sun?

The Sun is approximately 93 million miles away from Earth. Because the Earth's orbit is not a perfect circle, there cannot be an exact figure.

World's Largest Cactus

The world's largest cactus species is the Saguaro cactus. Pronounced "sah-wah-roh", it is native to the Sonoran Desert of southern Arizona, southeastern California, and northwestern Mexico.
The plant grows very slowly and can take up to 75 years to grow a second arm. The largest and oldest Saguaro have been estimated at nearly 200 years old and can reach heights of 40 or more feet (12 meters). However, the average old Saguaro has approximately five arms and is about 30 feet (9 m) tall.

World Population

According to the U.S. Census Bureau, as of this post, the world's population is approximately 6.65 billion, and the United States population is approximately 303.5 million.

I did some checking around, and this seems to fit the general consensus.

Here's another cool "World Clock" that has lots of random information.

How Can I Lower My Blood Pressure?

For most of us, it's common knowledge that a diet high in sodium can lead to high blood pressure or hypertension. So the obvious answer to help lower your blood pressure would be to reduce your sodium intake. However, something most people don't know is that increasing the amount of potassium in your diet can be just as big a factor in lowering your blood pressure. Tobacco, alcohol, and stress have also been shown to increase your risk of high blood pressure or hypertension.

Some potassium rich foods are: bananas, citrus fruit, dried apricots, fish (especially salmon, flounder, and tuna), green leafy vegetables, legumes, melons, potatoes, poultry, tomatoes, whole-grain cereals, and yogurt. So stock up on potassium-rich foods to help push your blood pressure down.

While getting the right amount of potassium provides positive health benefits, too much potassium can be dangerous. Some people are more sensitive to how potassium affects their body. It's always a good idea to slowly work your way into a new diet. As always, before making big changes to your diet or increasing your intake of potassium, check with your doctor first.

Click HERE to see a more detailed explanation of how potassium affects your health, courtesy of Colorado State University.

How Much Does Water Weigh?*

1 liter of water weighs 1 kg, or 2.2046 pounds.

To get the weight for a gallon of water is easy. Since 1 liter = 1 kg, and there are 3.7854 liters in a gallon, then a gallon of water weighs 3.7854 kg (8.3454 pounds.)

Depending on your rounding you may end up with a slightly different answer. Typically 8.34 - 8.36 pounds (3.7829 - 3.7920 kg) in a gallon is a respectable number.

However, the general consensus is that a gallon of water is 8.34 pounds (3.7829 kg).

Here are a couple of links for the people that want to see the math:
Link 1 Link 2

Liters and Gallons*

1 Liter

Standard
= 0.2642 gallons
= 33.8140 fluid ounces
= 1.0567 quarts
= 2.1134 pints
= 4.2268 cups

Metric
= 1,000 ml
= 1,000 cc

1 Gallon

Standard
= 128 fluid ounces
= 4 quarts
= 8 pints
= 16 cups

Metric
= 3.7854 liters
= 3,785.4118 ml
= 3,785.4118 cc

Who doesn't use the metric system?

Currently, there are only three nations worldwide that do not use the International System of Units (the metric system) as their primary or sole system of measurement. The three nations are: the United States, Liberia, and Burma.