Scientists Discover Secrets of Coffee

psychoactive – adj. having an effect on the brain; used to describe the effects of a drug    

plant - v. to put into the ground to grow; n. a living growth from the ground which gets its food from air, water and earth

map - n. a picture of the earth’s surface or a part of it

discover - v. to find or learn something

produce - v. to make; to create; to cause something to be; to manufacture

crop(s) - n. plants that are grown and gathered for food, such as grains, fruits and vegetables