Sinkholes may vary in size from 1 to 600 m (3.3 to 2,000 ft) both in diameter and depth, and vary in form from soil-lined bowls to bedrock-edged chasms. Sinkholes may be formed gradually or suddenly, and are found worldwide.
Artist Calvin Seibert makes amazing ‘Gehyry-esque’ sand castles using a variety of shapes and designs. The results are fantastical buildings that look more like modern architecture than traditional ‘castles’.
This is a really simple yet amazing project. It uses 4 lenses to control light in such a way that it renders an object invisible.
The millions of species of bugs that exist in the world today play a pivotal role in our ecosystem. Though a majority of them are harmless, some are especially good at either transmitting disease, injecting venom, or just generally being a nuisance. From bullet ants to tse tse flies these are the 25 most dangerous bugs in the world.
