and the Natural Capitalism economic model of Paul Hawken, Amory Lovins, and Hunter Lovins. Recently, it has begun to be used by politicians, notably Ralph Nader, Paul Martin Jr., and agencies of the UK government, including its Natural Capital Committee and the London Health Observatory. In Natural Capitalism: Creating the Next Industrial Revolution the author claims that the "next industrial revolution" depends on the espousal of four central strategies: "the conservation of resources through more effective manufacturing processes, the reuse of materials as found in natural systems, a change in values from quantity to quality, and investing in natural capital, or restoring and sustaining natural resources." Natural capital declaration In June 2012 a 'natural capital declaration' (NCD) was launched at the Rio+20 summit held in Brazil. An initiative of the global finance sector, it was signed by 40 CEOs to 'integrate natural capital considerations into loans, equity, fixed income and insurance products, as well as in accounting, disclosure and reporting frameworks.' They worked with supporting organisations to develop tools and metrics to integrate natural capital factors into existing business structures. In summary, its four key aims are to: Increase understanding of business dependency on natural capital assets; Support development of tools to integrate natural capital considerations into the decision-making process of all financial products and services; Help build a global consensus on integrating natural capital into private sector accounting and decision-making; Encourage a consensus on integrated reporting to include natural capital as one of the key components of an organisation's success. Natural Capital Protocol In July 2016, the Natural Capital Coalition (now known as Capitals Coalition) released the Natural Capital Protocol. The Protocol provides a standardised framework for organisations to identify, measure and value their direct and indirect impacts and dependencies on natural capital. The Protocol harmonises existing tools and methodologies, and guides organisations towards the information they need to make strategic and operational decisions that include impacts and dependencies on natural capital. The Protocol was developed in a unique collaboration between 38 organisations who signed voluntary, pre-competitive contracts. This collaboration was led by Mark Gough, who is now the CEO of the Capitals Coalition. The Protocol is available on a creative commons license and is free for organisations to apply. Internationally agreed standard Environmental-economic accounts provide the conceptual framework for integrated statistics on the environment and its relationship with the economy, including the impacts of the economy on the