is an example of intergenerational inequity, see
climate justice. Intergenerational equity is often referred to in environmental contexts, as younger age cohorts will disproportionately experience the negative consequences of environmental damage. For instance, it is estimated that children born in 2020 (e.g. "
Generation Alpha") will experience up to seven times as many
extreme weather events over their lifetimes, particularly
heat waves, as people born in 1960, under current climate policy pledges. Moreover, on average, played "a leading role in driving up GHG emissions in the past decade and
are on the way to becoming the largest contributor" due to factors such as
demographic transition, , and higher use of carbon-intensive products like energy for heating and private transport.
Climate change In 2015, a group of youth environmental activists filed a lawsuit against the U.S. federal government for insufficiently protecting against climate change in
Juliana v. United States. Their statement emphasized the disproportionate cost of climate-related damage younger generations would bear: "Youth Plaintiffs represent the youngest living generation, beneficiaries of the public trust. Youth Plaintiffs have a substantial, direct, and immediate interest in protecting the atmosphere, other vital natural resources, their quality of life, their property interests, and their liberties. They also have an interest in ensuring that the climate system remains stable enough to secure their constitutional rights to life, liberty, and property, rights that depend on a livable Future." In November 2016, the case was allowed to go to trial after US District Court Judge
Ann Aiken denied the federal government's motion to dismiss the case. In her opinion and order, she said, "Exercising my 'reasoned judgment,' I have no doubt that the right to a climate system capable of sustaining human life is fundamental to a free and ordered society." Australian politician
Christine Milne made statements in the lead-up to the 2014 Carbon Price Repeal Bill, naming the Liberal National Party (elected to parliament in 2013) and inherently its ministers, as intergenerational thieves; her statement was based on the party's attempts to roll back progressive
carbon tax policy and the impact this would have on the intergenerational equity of future generations.
Strong vs. weak sustainability A "
weak sustainability" perspective argues that intergenerational equity would be achieved if losses to the environment that future generations face were offset by greater gains in economic progress (as measured by contemporary mechanisms/metrics). Some adherents also prioritize the moral concerns about those alive today, putting a discount rate on outcomes for future generations when accounting for generational equity. Others disagree. From the "strong sustainability" perspective, no amount of economic progress (or as measured by contemporary metrics) can justify leaving future generations with a degraded environment.
Sharon Beder cautions that the "weak" perspective lacks a knowledge of the future and which intrinsically valuable resources will not be able to be replaced by technology. == Standards of living usage ==