Discounting minor trends, global warming has been going on since the last Ice Age a few thousand years ago, or, more precisely, since Snowball Earth a few hundred million years ago. This appears to have been accelerated during the Industrial Revolution, but the next step in tech, which we’re already into, shows a very good chance of:

a. correcting all this, and:
b. complete obliteration of life,

...either of which would end with a "who really cares?" result.

Atmosphere channeling out to space has been going on forever, but there's a catch to this in the Earth's magneto-sheet, which draws the majority back in, and we’re being replenished by both biological and igneous sources.

As for radiation, most of this is underground, and the Western World takes a very dim view of surface and atmospheric nuke detonation testing. After all, it's a dangerous practice, and just about anything anyone could hope to learn from this can be found more safely, and far less expensively -- comparatively free -- in the Britannica on-line.

If you want to destroy a planet, all you really have to do is persuade the inhabitants to build more internal combustion engines, sell them to developing nations and drive them more often.

The battery-world isn’t looking too hot, either, but the threat of lithium and mercury contamination is another story.