Lawyers use the term 'duty of care' when there is a fiduicary duty owed, often a duty owed by a trustee or a board member to an identified benficiary or group of beneficiaries. Infact there is a whole body of law known as Trust law. The trustee is given legal title to the trust property, but is obligated to act for the good of the beneficiaries.
Another area of law that applies trusteeship is childcare provisions. This makes sense - we cede our overriding right to service our needs and instead put the interests of the child first. What we have is a relationship with our child (trusteeship law is about putting the welfare of the beneficiaries first); we do not view them as tradeable commodities (property law) there in service of our needs. As such, where children are traded or harmed we view that as a crime. The purpose of creating laws that put the interests of the child first is to govern our relationship between ourselves as primary carers and the children we have in our care. Whereas if we treat our child as piece of property, in the legal sense, our rights over the object (the child) would be absolute. As you can see, the word 'care' brings with it duties and responsibilities. Infact a 'duty of care' refers to the sanctity of the relationship between the the trustee and the beneficiary - as opposed to one party putting self-interest first.
I flag this up becuase all too often I hear so many saying all we need do is create a system that puts a price on nature and we shall be okay - ecosystem services is one example. For me, this is a narrative that does not stack up. Who stands to benefit here? The land or air that is being traded certainly does not, nor do the communities that have been injured. It's akin to putting a price on harming a child. But more than that, it allows the cycle of harm to perpetuate regardless of whether or not it is human caused or naturally occurring. Because we have no legal duty of care, what power do we have to act? Very little indeed. Instead we do a calculation: how much for loss of countless Small Island States that are at threat of going under water? How much to destroy our forests and how much to pollute our water?
Yet, caring for life comes from the nurturing of a relationship, not the placing of a pricetag. The right to life is priceless - what we are talking about is the very sacredness of life itself. Once a Small Island State goes under water it's gone, and no amount of money will bring back the land, the community, nor the sense that this was once home for those who lived there.
A law of Ecocide creates a duty of care - a duty owed collectively by humanity to the Earth. Under a law of Ecocide, any territory at risk of or suffering significant harm shall be assisted first and foremeost from a place of trusteeship. The primary determinant is what assistance is required, not how much it will cost. In essence, our values become aligned with our belief in the most sacred duty of all: our sacred trust is our care for the well-being of Earth itself.