Washington, Sep 18 (TIWN) Greta Thunberg, the 16-year-old Swedish climate activist, has told the US politicians that they were not doing enough to combat climate change.

 “I know you’re trying,” she told Democratic senators at an invitation-only forum, “but just not hard enough. Sorry.”  Massachusetts Sen. Ed Markey thanked the 16-year-old activist for her advice and her activism, which has gained worldwide attention by inspiring a series of protests and school strikes, including one set for Friday.  Thunberg and other young activists bring “moral clarity” to the fight against global warming, Markey said.