within margin of error?

California is experiencing its worst drought since record-keeping began in the mid 19th century, and scientists say this may be just the beginning.

B. Lynn Ingram, a paleoclimatologist at the University of California at Berkeley, thinks that California needs to brace itself for a megadrought—one that could last for 200 years or more.

“During the medieval period, there was over a century of drought in the Southwest and California. The past repeats itself,” says Ingram.