If GLOBAL WARMING gets unabated, don't you think our earth's atmosphere won't explode and diffuse into space?

We do not know when and where is the breaking point of the capacity of our atmosphere to hold so much heat within. Scientists concentrates on the effects like melting of icebergs, climate change, etc. But then, no one has taken notice of the vulnerability of the atmosphere itself! Cosmic disturbance might even trigger the sudden bursting of our fragile atmosphere. Nations are fighting because some are selfish and grabbers. Others retaliates. No one thinks for the benefit of the whole humankind. Wow! What a bleak future ahead of us?! Is there still any hope? Doomsday clock has been moved closer to our destruction, our own self-inflicted demise in this universe.