July 23, 2015 â Teens using marijuana for medical reasons are 10 times more likely to say they are hooked on marijuana than youth who get marijuana illegally, a new study shows. The study is the first to report on a ... Slow to Mature, Quick to Distract: ADHD Brain Study Finds Slower Development of Key Connections.
Define prehistoric. prehistoric synonyms, prehistoric pronunciation, prehistoric translation, English dictionary definition of prehistoric. also preÂ·hisÂ·torÂ·iÂ·cal adj. 1. Of, relating to, or belonging to the era before recorded history. 2. Of or relating to a language before it is first recorded...
Prehistoric archaeologists are trying to document and understand the ways in which humanity adapted itself to the diverse environments of the world. We humans are the only animals to use our culture, the sum total of ways of living, as the primary means of adopting to our environment.