to a paradise in flames. i have asthma. we had to roll up wet towels put themed upper windows. reporter: so scary her family sent her back home early. she began researching fires, longer droughts, bigger storms, baked into her fauture thanks t our relentless relial on fossil fuels and then she found greta, you say your love your children above all else and yet you re stealing their future in front of their very eyes. reporter: after starting her one-girl school strike in her native sweden, she filled rooms calling all out for a failure to act. adults keep saying we owe it to the young people to give them hope. but i don t want your hope. i don t want you to be hopeful. i want you to panic.