'Start Here' podcast: Dire climate report

A United Nations climate panel says governments have 12 years to stop irreversible damage from climate change. ABC News' Brad Mielke reports.
2:01 | 10/09/18

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Transcript for 'Start Here' podcast: Dire climate report
And a report from top climate scientists is sounding a new alarm about global warming did the United Nations panel says in our lifetime to global temperature will rise to damaging levels. It BC's Fred milky looked into the report. I guess yeah this report from the United Nations climate panel was dire like emergency time. Scientists say by 203012. Years from now the global temperature could rise to a degree Celsius. At that point scientists said he reversible damage starts happening but they also said if we act now we could lower that to what degree and a half. So I talked to a climate scientist Michael Mann runs that earth system science center at Penn state university and I asked him. What difference does have to dig remake that's at one degree Fahrenheit. For. Each degree Fahrenheit warming. Of the oceans. You get a roughly 7% increase in the peak wind speeds associated with these very strong our hurricanes category four category five hurricanes. Then at 7% increase in wind speed translates to a 20%. Increase in destructive potential the one degrees Celsius warming that we've already seen. Has increased. Those peak winds giving us the more destructive hurricanes and super typhoons we've seen in recent years if we warm the planet more than two degrees Celsius. We could very well commit to six to eight feet of sea level rise up by the end of the century. In his 91 authors from forty countries around the world were clear reducing carbon emissions is how you change this but they also said. You need drastic changes beyond anything we've ever seen before. In get the latest on this alarming reports on start here later this morning ticket at an apple podcasts or you've ever podcasting app. Candace Linda. Expressed. So kind of suspects it's too late. I can't might not be too late rising sea levels are the huge concern you know with the droughts yeah crops and everything and climate refugees from certain areas but might not be too late. I mean we will have to change a lot in order for it to change.

This transcript has been automatically generated and may not be 100% accurate.

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