Climate activist Greta Thunberg has deleted a 2018 tweet warning that “climate change will wipe out all of humanity” by 2023 if fossil fuel usage continued. The 20-year-old Swedish activist’s tweet referred to a grim warning from Harvard University professor of atmospheric chemistry James Anderson, who claimed that pollution as a result of burning fossil … Continue reading Greta Thunberg deletes 2018 tweet saying “world will end in 2023” after world does not end