Last week, a 100-meter-long test dune was raised on the coast near Monster. A hybrid dune, consisting of a combination of ...

In this case, sand, water, and metal BBs. The first experiment was a mixture of salt and water used to make a can chiller for soda or beer (the blue thing in the upper right). It took some ...

For example, if you mix water, sand and cement you get concrete. This sets hard and you can't get the original substances back again. You can separate a mixture of sand and water by passing it ...