YOU SAID:

People started global warming

INTO JAPANESE

人々 は、地球温暖化を開始

BACK INTO ENGLISH

People began warming

INTO JAPANESE

人々 は、地球温暖化を始めた

BACK INTO ENGLISH

People began the global warming

INTO JAPANESE

人々 は、地球温暖化を始めた

BACK INTO ENGLISH

People began the global warming