As neolithic humans knew, it’s not easy to light a fire. When fire was used for both heat and illumination, the delay between wanting a little light and getting one could be a problem. One of the ways ...

The intense colors shown in this photo are formed by the exothermic oxidation of ethanol with potassium permanganate in the presence of concentrated sulfuric acid. Murilo Sérgio da Silva Julião is a ...

Although none of the Game of Thrones spinoffs have arrived yet, many facets of the series remain indelibly seared into our brains. Some explosively so, like the wildfire various characters use to gain ...