A little old, but I guess it's still as cool as ever. In this video this dude does it with paper, but I've seen it done with cigars also. Pretty cool! Enjoy!

A pretty cool effect obtained by this guy, by throwing some liquid nitrogen in a swimming pool. I think, though, that it would've been even cooler if he tripped when carrying it But then it would be in the "Ouch" section of this site )

Here's a wonderfully cool chemistry experiment done with liquid nitrogen. It literally explodes! Enjoy!

This cool engine is probably the one with which NASA will reach Mars. The advantage of it compared to current ones, is that it's cheaper, and that you can potentially harvest it from other planets! Awesome engine!

This is water supercooled at -21 degrees Celsius (-6F). As you can see it is still in liquid form. You can check out why on the supercooling wiki page. The amazing thing happens when you pour the water. Really cool! Enjoy!

A non-newtonian fluid under stress reacts as a solid. In this case they filled a pool with a mix of cornstarch and water made on a concrete mixer truck. It becomes a non-newtonian fluid. Update: Liquid Armor is one of this fluid's applications.

This guy, tried to smash a can of WD40 cleaner. The hit generated by the compression of the liquid inside the can made it explode into flames, and spread burning liquid everywhere. It's a good alternative for Napalm! So...don't try this at home!

A cool demonstration of how liquid metal (actually an exotic alloy) can store energy and then return it, in a surprisingly elastic way. Enjoy the liquid metal demo video!

Here's another cornstarch and water solution, which becomes a non-newtonian fluid. A Non-Newtonian fluid, has properties that cannot be described by classical fluids. In this video clip, the non-newtonian fluid is a mixture of corn starch and water.

This is a followup of Pool with non newtonian fluid. As seen there non-newtonian fluids can have different properties (fluid/liquid) depending on the stress. Here is an up-to-date application for the military: Liquid Armor. Enjoy! Liquid Armor - video powered by Metacafe

Small robots that walk on water like insects? The kitchen table, the walls of a room or the arms of an armchair that are self-cleaning? Two phenomena that Xiao Cheng Zeng, a professor of chemistry at University of Nebraska in Lincoln (USA), considers possible in the near future, and based on the same characteristic: super hidrofobia. Thanks to the computational performance of the super computer of the Riken Institute in Japan, the researcher is able to reproduce the conditions that give the area the property is to "roll" away the drops of water. In nature this phenomenon is observed on the bristles of caterpillars or on lotus flowers, and allows insects that often are seen on ponds slip skate on water. As the authors of the study reported the caterpillars or insects skaters get the super hydrophobia surface through a "two-tier" surface which means a waxy base on which there are microscopic structures like hair, often covered in turn by smaller "hair". These gradients decrease the surface area in contact with the drop of water. The result is that the drop rolls instead of sliding, as it would be a hydrophobic surface.

It was finally demonstrated how atoms arrange themselves inside the materials. This opens new possibilities for designing ultraresistant objects. Glass is a material called 'amorphous', whose atoms that is, are not disposed in a regular type structures crystal. The substance is not considered a solid but, rather, a liquid with very high viscosity. An international research team, led by Paddy Royall University of Bristol (Great Britain), in collaboration with Japanese and Australian scholars, is now able to demonstrate that during the solidification particles have in-shaped structures that prevent the icosahedron formation of crystals. Unlike solid crystalline form, in which the atoms are fixed to one another by chemical bonds into regular geometric structures, glass appears' solid 'just because the movement of each particle is physically prevented by the presence of other neighbouring atoms. The particles, that is, hinder each other. It was thus finally confirmed, with a simulation test, a 50 years old theory that explains many of the characteristics of this material and that could allow us to build, for example, non-crystalline metals much more resistant than traditional ones.

Robo4, present in the cells of the blood vessel wall, may improve or prevent the consequences of eye diseases The age-related ocular degeneration is the leading cause of blindness in people over 65 years old, and retinopathy lead to total loss of sight in most of the patients of diabetes, about 21 million in the world. In particular, the degeneration and the destabilization of the vessel wall causes many times a loss of liquid and, consequently, severe inflammation that can lead to blindness. A new protein, named Robo4, identified in cells in the wall of blood vessels, may prevent these anomalies and help reduce or even prevent various vascular diseases related to an increase. The study, conducted by Dean Li and colleagues at the University of Utah, in the United States, was published in Nature.