Greta was a world class troll.

She was there to push "man-caused climate change" and the thing that will fix it is more taxes.

When it is obvious to any actual scientist that it is being caused by changes in the sun. (All the scientists that work for the UN agree that it is man-caused global warming climate change)

Greta is actually trying to do actual activism now and getting no press at all. Poor little girl.

And, it looks like the earth would actually be a lot better if it had twice the amount of CO2, and was a couple degrees warmer on average. But, we are going into a cold spell to replenish the oceans (natural cycle of the planet)