[Catholic Caucus] Atheist Eco-Globalist Leads Climate Alarmist Brigade at Amazon Synod Hans Schellnhuber gives keynote speech in synod hall VATICAN (ChurchMilitant.com) - A leading atheist climate scientist who advocates a one-world government and is asking countries to relinquish national sovereignty in favor of supranational institutions was the keynote speaker at the Amazon Synod on Monday.