Out of all the senses, smell is most closely linked to memory.
146
Sound travels about 4 times faster in water than in air.
408
Balsa wood is classified as a hard wood!
41
Iron weighs more after it rusts.
68
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9