If we're looking for life as we don't know it, the best solvent out there may be concentrated sulfuric acid — the stuff that's floating around in the clouds of Venus.

The technique is pretty straightforward and potentially very cheap, but will need to be scaled up significantly to make a difference.

Over 57 crore devotees have taken a holy dip in the Ganga during the Mahakumbh, yet its purity remains unaffected.

Outside of a handful of valleys in Antarctica, the Atacama is the driest place on Earth. The inhospitable landscape of sand, ...