6 things to know about teenage climate change activist Greta Thunberg - USA TODAY

6 things to know about teenage climate change activist Greta Thunberg  USA TODAYWASHINGTON -- Teen climate change activist Greta Thunberg will be one of the witnesses to testify before a joint hearing of two House committees Wednesday...

6 things to know about teenage climate change activist Greta Thunberg - USA TODAY
6 things to know about teenage climate change activist Greta Thunberg  USA TODAY

WASHINGTON -- Teen climate change activist Greta Thunberg will be one of the witnesses to testify before a joint hearing of two House committees Wednesday ...