Without science, humanity never would have left caves. Computer technology, medical breakthroughs, weapons of war, and knowledge of outer space all came into being thanks to the wonders of science.

Explore 25 exciting science experiments that bring learning to life! Using common materials, these hands-on activities demonstrate fascinating scientific principles through engaging demonstrations.

(via SciShow) Most science experiments take a few months or years, but some take a whole lot longer. Here are six of the longest-running experiments of all time, including one expected to last 500 ...