The magnificent wonder of watching a waterfall is enough to leave even the most indoorsy among us totally awestruck. Whether you’re taking in the falls from a roadside overlook or hiking for a closer view, here are some of the world’s most wondrous falls you definitely don’t want to miss.

Angel Falls: Auyantepui, Venezuela

Difficulty: 5

Dropping over the edge of the Auyantepui mountain, Angel Falls is the world’s highest uninterrupted waterfall with a height of 3,212 feet. Situated within the Canaima National Park, this is one of Venezuela’s top tourist attractions — despite the fact they are slightly challenging to reach. A flight is required from Puerto Ordaz or Ciudad Bolívar to reach the starting point for river trips to the base of the falls, which are led by native guides from June to December. Read more

The term “dehydration” sounds very serious. You think it has nothing to do with you. It would only happen in poor countries or severe disasters like earthquakes right? No. Dehydration is way too common than most people think.

75% of Americans1 are chronically dehydrated and don’t even know it. And even mild dehydration can affect our bodies and how we feel a lot. Think about this. “60 percent of our bodies is composed of water, 75 percent in our muscles, 85 percent in our brains, it’s like oil to a machine,” said Dr. Roberta Lee from Clear Lake Regional Medical Centre.

When you’re feeling unwell, quite often it might be the result of dehydration. Check the signs below and you’ll be surprised that how dehydrated your body often is and how some of the annoying health issues can actually be resolved so easily. Read more

So you bought a bottle of water instead of bringing your own refillable container. It’s not the most environmentally friendly choice, but never fear: once it’s empty, you can just refill it a few more times. Reduce, reuse, recycle, right? Well, we’ve got news: multiple studies show that refilling disposable water bottles is a health risk. Read more

Drinking untreated water has more drawbacks than the price tag.

Water from the Wales Spring in Toledo, Wash., flows into a cistern.

Is drinking “raw water” a great way to get beneficial minerals and microbes removed by filtration—or do people who pay $15 a gallon for untreated water have more money than sense? The subject has been hotly debated since a New York Times story last week looked at people—many of them wealthy Silicon Valley residents—who are “[getting] off the water grid.” Some collect water from springs themselves; some buy from companies like Live Water, which charges almost $40 for a 2.5 gallon jug and $15 for refills; and others have installed expensive systems to collect water from the air.

One big fan is Doug Evans, who says he lived on Live Water for 10 days after his Juicero company, which sold a much-mocked $700 juicer, collapsed a few months ago. “I’m extreme about health, I know, but I’m not alone with this,” he told the Times.

Evans and other proponents argue that “raw water” is healthier than regular water, which they see as tainted by chemicals like fluoride. Live Water founder Mukhande Singh claims fluoride is a “mind-control drug” and describes public water as “toilet water with birth control drugs in them.” Opponents, of which there are many, warn that drinking untreated, unfiltered water can be extremely dangerous because it could contain the viruses, bacteria, and parasites that filtration removes. Read more

For years, scientists have known glacial lakes can rapidly empty themselves of billions of gallons of water—in at least one case, faster than the speed at which water flows over Niagara Falls.

In this July 19, 2011 file photo, a large melt pool forms in the Ilulissat ice fjord below the Jakobshavn Glacier, at the fringe of the vast Greenland ice sheet.

Now, they finally know how it’s done. Researchers had guessed that the weight of the water caused cracks to form in the lake’s icy bottoms that let water drain thousands of feet to the ice sheet’s bed, but that didn’t explain why some lakes cracked and others didn’t. Read more