I've been following this guy's feed for quite a while - Paul Beckwith from the University of Ottawa. He seems to me very down to earth, very 'sobre' and genuine. He quotes many respected scientific sources. Although I don't personally agree with the concept of 'geo-engineering' to turn things back, which is being increasingly suggested. Nevertheless, here's (what I find to be) an insightful current view on the risk of trajectory into "hothouse Earth" and where he believes things currently stand. It's well worth a view...