Chicago Mayor Rahm Emanuel’s response to the Trump administration pulling down its website detailing information about climate change: putting up his own.

The new section of the City of Chicago’s website, launched this weekend, pulls data from the archived Environmental Protection Agency page, noting, “while this information may not be readily available on the agency’s webpage right now, here in Chicago we know climate change is real and we will continue to take action to fight it.” Emanuel is promising to build the site out more in the coming weeks, using city resources.

“The Trump administration can attempt to erase decades of work from scientists and federal employees on the reality of climate change, but burying your head in the sand doesn’t erase the problem,” Emanuel said.

Through both Republican and Democratic administrations in the past two decades, the EPA accepted and promoted climate change data. That changed under President Donald Trump, who’s expressed doubts about the science and already eliminated regulations put in place by President Barack Obama, and EPA Administrator Scott Pruitt, who has repeatedly questioned global warming and fought environmental protections from the government he argues unfairly target businesses.