i'm joined by michael oppenheimer, a professor of geosciences and international affairs at princetonrsity. he is one of the six scientists who filed an amicus brief in the supreme court case. and mustafa ali, who formerly worked in the epa office of environmental justice and is now with the national wildlife federation. welcome to you both. thank you for joining us. the ruling clearly leaves the administration with far fewer tools to fight the climate crisis, but the epa administration insist they can still meet their goals. it will just take a little longer. do you buy that? >> that is a very optimistic view. even under an optimistic view, this decision will seriously slow u.s. progress in reducing emissions of greenhouse gases and avoiding dangerous climate change. what i mean by dangerous is much more of the kinds of weather we've already started to see. record heat, drought, sea level rise, and really intense rainstorms. in some cases, drowning people in their own bedrooms. what was the government going to do about that? well, congress, number one, could act. number two, the admi