Descartes interpreted the pineal gland as the seat of the soul, the place in which the senses are processed and the thoughts formed.
captions from Wikipedia based on theme by Andrew of UT
The see-through skin of an 2.5-centimeter-long glass frog reveals her eggs. Native to Venezuela, the frogs lay eggs in bushes and trees overhanging streams. Tadpoles hatch, then tumble into the current to be swept away.