[ 3/Feb/21 ]
In and of itself, no.
And we need to be clear, the planet is not endangered.
Human life on the planet, that is something else.
Many of the existing sets of ecosystems – many of them too are in danger at present, unless we do make significant changes to how we behave towards each other and the environment that supports us all.
That is doable, and we need to do it, and soon.
Part of doing that is switching from fossil fuels to solar power, and it is much more complex than just that (by many orders of magnitude) – and it is doable.