Swedish teenager Greta Thunberg offered a blunt message to
Congress on Tuesday as she brought her campaign for urgent action on climate change to the U.S. Capitol.
"I know you're trying," she told
Democratic senators at an invitation-only forum, "but just not hard enough.
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.