C-Change Conversations simplifies the science and takes the politics out of climate change to make the topic easier for everyone to understand and discuss with friends and family. 


We’ve asked a few of our science advisors what questions they receive most often and posted their answers below. Ask your questions here and with your permission, we’ll post them (with or without attribution) so everyone can learn from the experts.

Nadir Jeevanjee is a climate scientist in Princeton University’s Program in Atmospheric and Oceanic Sciences. He has a background in theoretical physics and currently studies clouds and radiation in the climate system. He is active in communicating climate science to non-specialists and to the public, both through his own talks as well as through the outreach group Climate Up Close, which also contributes to this Q&A. Here are a video and a summary of his talk for lay audiences.  Learn more about Nadir.

What is the impact of the ozone layer on climate change? Is the ozone layer closing all that troubling?

The earth’s temperature has fluctuated since the beginning of time. How do we know this isn’t just another warming phase? 

Bernadette Woods Placky is an Emmy Award winning meteorologist and director of Climate Central's Climate Matters program. Bernadette works with fellow meteorologists from across the country, providing resources and data on the connection between climate change and weather and has appeared on national and local television broadcasts to help explain extreme weather events. Learn more about Bernadette.

How do we know the fires in Australia and storms like Hurricane Sandy were worsened by climate change?


Liz Sikes is a professor of oceanography at Rutgers University and a paleoceanographer. The unifying theme of her work is carbon cycling. She is investigating circulation in the Southern Ocean to determine how this traps and releases CO2 from the deep ocean on glacial time scales. Liz also investigates past sea surface temperature changes in the oceans around New Zealand and Australia, as well as the sources, pathways, and sinks of terrestrial and marine carbon in the modern environment to understand their impact on coastal ocean acidification. Learn more about Liz.

On our current emissions path, experts predict 1000 parts of carbon dioxide (CO2) per million in the atmosphere by the end of this century. Have levels ever been that high before? If so, when was that and what was the earth like then, especially with regard to sea levels and temperature?


Oceans play a big part in moderating our climate. Do we have any reason to think that will change?

C-Change Conversations is a non-profit, tax-exempt organization (tax ID 82-0839429) under Section 501(c)(3) of the Internal Revenue Code. Donations are tax-deductible as allowed by law.

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