Old Rocks
Diamond Member
Atmospheric CO2 Concentrations Surpass 400 PPM Milestone
Scientists argue we've loaded the "climate dice" in favor of more weather anomalies and extreme heat waves.
Research also shows that continued emissions of long-lived greenhouse gases like carbon dioxide will mean "largely irreversible" climate change for 1,000 years even after we curtail emissions.
"The last time we're confident that CO2 was sustained at these levels is more than 10 million years ago, during the middle of the Miocene period," climate scientist Michael Mann told The Huffington Post in an email. "This was a time when global temperatures were substantially warmer than today, and there was very little ice around anywhere on the planet."
There is no way that we will keep the rise in temperatures below 2 C this century. And the Arctic Ice will be gone for most of the summer while many of us here are still alive.
Scientists argue we've loaded the "climate dice" in favor of more weather anomalies and extreme heat waves.
Research also shows that continued emissions of long-lived greenhouse gases like carbon dioxide will mean "largely irreversible" climate change for 1,000 years even after we curtail emissions.
"The last time we're confident that CO2 was sustained at these levels is more than 10 million years ago, during the middle of the Miocene period," climate scientist Michael Mann told The Huffington Post in an email. "This was a time when global temperatures were substantially warmer than today, and there was very little ice around anywhere on the planet."
There is no way that we will keep the rise in temperatures below 2 C this century. And the Arctic Ice will be gone for most of the summer while many of us here are still alive.
