[#Shoutoutsunday] Shout out to the amazing @gretathunberg is a Swedish environmental activist who is known for challenging world leaders to take immediate action for climate change mitigation. Her sudden rise to world fame made her both a leader in the activist community and a target for critics, especially due to her age (18). Her influence on the world stage has been described as the "Gretaeffect".

Did you know @gretathunberg?