The world's most popular coffee species are going extinct. And scientists say we are to blame

By Lauren Kent, CNN

Updated 1907 GMT (0307 HKT) January 16, 2019

Chat with us in Facebook Messenger. Find out what's happening in the world as it unfolds.

Photos: Coffee's health history

It's thumbs up today, but the news on coffee has not always been positive. Take a look at the arguments for and against coffee through the centuries.

Hide Caption

1 of 15

Legend has it that coffee was discovered by Kaldi, an Ethiopian goatherd, after he caught his suddenly frisky goats eating glossy green leaves and red berries and then tried it for himself.

Photos: Coffee's health history

1500s headline: Coffee makes you frisky – Legend has it that coffee was discovered by Kaldi, an Ethiopian goatherd, after he caught his suddenly frisky goats eating glossy green leaves and red berries and then tried it for himself.

Hide Caption

2 of 15

But it was the Arabs who started coffeehouses, and that's where coffee got its first black mark. Patrons of coffeehouses were said to be more likely to gamble and engage in "criminally unorthodox sexual situations," according to author <a href="https://www.washington.edu/uwpress/search/books/HATCOF.html" target="_blank">Ralph Hattox</a>.

Photos: Coffee's health history

1500s headline: Coffee leads to illegal sex – But it was the Arabs who started coffeehouses, and that's where coffee got its first black mark. Patrons of coffeehouses were said to be more likely to gamble and engage in "criminally unorthodox sexual situations," according to author Ralph Hattox.

Hide Caption

3 of 15

As the popularity of coffee grew and spread, the medical community began to extol its benefits. It was especially popular in England as a cure for alcoholism, one of the biggest medical problems of the time.

Photos: Coffee's health history

1600s headline: Coffee cures alcoholism – As the popularity of coffee grew and spread, the medical community began to extol its benefits. It was especially popular in England as a cure for alcoholism, one of the biggest medical problems of the time.

Hide Caption

4 of 15

This 1652 ad by London coffee shop owner Pasqua Rosée popularized coffee's healthy status, claiming that coffee could aid digestion, prevent and cure gout and scurvy, help coughs, headaches and stomachaches, and even prevent miscarriages.

Photos: Coffee's health history

1600s headline: Coffee cures all? – This 1652 ad by London coffee shop owner Pasqua Rosée popularized coffee's healthy status, claiming that coffee could aid digestion, prevent and cure gout and scurvy, help coughs, headaches and stomachaches, and even prevent miscarriages.

Hide Caption

5 of 15

By 1730, tea had replaced coffee in London as the daily drink of choice. That preference continued in the colonies until 1773, when the famous Boston Tea Party made it unpatriotic to drink tea. Coffee houses popped up everywhere, and the marvelous stimulant qualities of the brew were said to contribute to the ability of the colonists to work longer hours.

Photos: Coffee's health history

1700s headline: Coffee helps you work longer – By 1730, tea had replaced coffee in London as the daily drink of choice. That preference continued in the colonies until 1773, when the famous Boston Tea Party made it unpatriotic to drink tea. Coffee houses popped up everywhere, and the marvelous stimulant qualities of the brew were said to contribute to the ability of the colonists to work longer hours.

Hide Caption

6 of 15