Located in East Java, Indonesia, the Kawah Ijen volcanic crater has an eerie beauty to it. But its turquoise waters are filled with deadly acid thanks to the volcano's sulfuric output. That doesn't stop sulfur miners from braving the toxic gases.
If you've ever visited Old Faithful and the other geysers at Yellowstone National Park, you've likely come away with two reactions. First, it's one of the most captivating sights in all of nature. Second, the place stinks like rotting eggs.
The Earth was a very different place 3.5 billion years ago. In the absence of oxygen, many scientists believe Earth's earliest ecosystems survived on sulphur, but researchers have long been unable to find any proof of this hypothesis, in the form of fossilized microbial life.
It's hard to know where to begin when calculating the effects that climate change might have on our planet, but I'm guessing most people haven't considered the smell factor. Global warming could super-charge the production of a particularly smelly gas.
A recent proposal to control global warming is to release sulfur droplets into the atmosphere, which would hopefully block out some of the Sun's rays. Venus has been running an eons-long simulation of just that plan...and it doesn't look good.