  The unfolding climate crisis is a physical manifestation of the damage that
market economy, driven by the high intensity consumption of fossil fuels, has
inflicted on the Earth System and on the stability conditions that were
established by a complex conjugation of natural factors during the Holoecene.
The magnitude of the human activities and its predatory nature is such that it
is no longer possible to consider the Earth System and the services it provides
for the habitability of the planet, the so-called natural capital, as an
economical externality. Thus one is left with two main choices in what concerns
the sustaintability of the planet's habitability: radical economic degrowth or
highly efficient solutions to internalise the maintenance and the restoration
of ecosystems and the services of the Earth System. It is proposed that an
interesting strategy for the latter is to consider the natural capital as a
stock option.
