'Run for America' co-founder backs climate strike: We are dealing with a 'crisis'

Progressive commentator David Burstein defended the progressive movement's concerns surrounding climate change, telling "Fox & Friends" on Saturday that the United States was facing an environmental. "crisis."

Burstein, co-founder of "Run for America,"  spoke to Fox News one day after students in cities around the world ditched school as part of a "climate strike."

Fox News host Jedediah Bila suggested to Burstein that the left kept shifting their predictions and rhetoric surrounding the environment.

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"Look I think the reality is, and the reason you're seeing people out in the streets fighting on this issue, is because this is a crisis," responded Burstein, who indicated that early warnings about climate change came at a time when the world still had the opportunity to avert its worst effects.

"Now, we're facing a pretty serious set of crises -- and I think people need to focus less on the specific differences and different scientists' predictions about what's going to happen when because there actually is a lot of debate about that," he told Bila. "What we know is that what's happening and what's going to happen is very, very serious and that it requires not just a little bit of incremental approach from the government, it requires real serious stakes from everybody."

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Democratic presidential candidates have warned about the specter of climate change and pushed aggressive proposals to address the issue.

The issue also received attention from the Defense Department which released a report earlier this year describing "the effects of a changing climate" as a "national security issue with potential impacts to Department of Defense ... missions, operational plans, and installations." Former Defense Secretary James Mattis also warned about the issue this month.

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Others have mocked the concerns as alarmist while pointing to past warnings that the world would undergo another Ice Age. On Wednesday, the right-leaning Competitive Enterprise Institute released a report detailing decades of apocalyptic predictions about climate change that failed to come to pass.

The dire predictions, often repeated in the media, warned of a variety of impending disasters – famine, drought, a new ice age, and even disappearing nations – if the world failed to act.