Were the sacred temples of antiquity designed with acoustic resonance in mind? Researchers have noted that many sacred spaces seem to work as either amplifiers, filters or sound interfaces. The staircase at Mayan temple Chichen Itza, for example, transforms hand claps into the quetzal bird’s chirping. Read more about sacred sound archaeology here, and for more acoustic nirvana, check our latest conversation between Xosar and New Age pioneer Iasos.