I could see, hear, breathe, feel and walk just as before," he said of the experience, per Time. Hansen presumed – correctly – that high concentrations of heavy water would be fatal to humans ...

While you can admire the 200-foot cascade of water just fine from the top of the trail, if you're a confident hiker who's not afraid of heights, it's surely worth the short, steep hike to see this ...

It's finally time to return to Pandora in Avatar: The Way of Water. But what's the best way to see James Cameron's sci-fi epic? First things first, yes, it's an absolute must to watch the movie in 3D.