Humanity probably will not be wiped out, but the current global civilization will collapse like it happened to many other civilizations before because they reached the ecological overshoot. I also thought that something "could be done" on a large scale, but after studying the problem in depth (starting with the IPCC report), I began to prepare on the community level for the impact in the next 10-20 years. That's the only area where something can be done.
By the way, BBC is not a reliable source, like other neoliberal propaganda they bet on continuing "business as usual" while coming up with some innovative solutions (so-called "techno-hopium").