'Fifty years ago, on November 5, 1965, President Lyndon B. Johnson’s White House released “Restoring the Quality of our Environment”, a report that described the impacts of climate change, and foretold dramatic Antarctic ice sheet loss, sea level rise, and ocean acidification. That 1965 White House report stated: “Carbon dioxide is being added to the earth’s atmosphere by the burning of coal, oil, and natural gas at the rate of 6 billion tons a year. By the year 2000 there will be about 25 percent more CO2 in our atmosphere than present.” Catastrophically, on the 50th anniversary of the White House report, CO2 concentrations in the atmosphere are indeed at 399 ppm: 25 percent over 1965 levels, exactly as predicted 50 years ago.' 'Science.thehill.com/blogs/congress-blog/energy-environment/259342-fifty-years-ago-the-white-house-knew-all-about-climate
Education about the subject of global warming/climate change is one of the greatest challenges of our day. And it is a necessary precursor to action. All styles, all targeted audiences, all types of messengers are needed. A majority of people will soon have to do their part. Thank you for doing yours cheerfully. The world needs you just as you are.
Using the physics of the time Arrehmius couldn't determine if the effect of increasing CO2 would be increased temperature or increased cloud cover. Both are a change to the climate but it wasn't possible to model the global climate (usingl modern computers) well enough to know how sensitive temperature is to CO2 concentration.
In addition to the Industrial Revolution's obvious increase of carbon in the atmosphere causing the "screeching halt" of the next ice age, it should be noted that humans have already been exerting their impact on the climate in a gentler, even beneficial way. The Milankovich cycles suggest that there should have been an 8000 year decline, were it not for the human introduction of agriculture. William Ruddiman, paleoclimatologist and Professor Emeritus at the University of Virginia suggests that the unprecedented leveling of our CO2 levels and climate have been the result of humans gradually removing carbon sinks from the planet -- our forests, in the name of agriculture. Since most mass extinction of species happen when there are drastic changes in climate, we have unwittingly been performing a service to biodiversity by being controllers of a biological thermostat. Of course, that was less than one billion people, and there arises biodiversity issues with loss of forest habitats. Although the Industrial Revolution added 0.6 degrees to the world climate, Ruddiman points out that agriculture has gradually created a differential of 0.8 degrees from where the Milankovich cycles suggested we'd be! That means two things -- first, we can stop beating ourselves up over being apart from nature -- nature (with God at the helm, if you will) has enlisted us as keepers of the biothermostat! Second, we have an incredibly powerful tool in modulating both agriculture and deforestation/reforestation, and mitigating fossil fuels isn't the only tool in humanity's global cooling kit. Our choice of food is the key factor in this modulation -- with the crisis created by industrialization (primarily by the energy sector but also by agriculture). If agriculture could be responsible for adding 0.8 degrees to cancel the ice age, we can also cancel a significant portion of the climate crisis by eliminating animals from our diet. How fast can we do it? It's something that I've already done and it's something that you can do today. The fight to keep oil in the ground must continue -- in fact, we may need to have some fossil fuels left in our thermostat tool kit several hundred years from now when the Milankovich cycles start to push that ice age even harder. Whenever anyone talks about geoengineering most methods are treacherous and uncertain. Technology has given us the means to measure our planet's fever (hear that Mr. Trump? We still need NASA) and use an all-natural remedy -- reforestation and elimination of food animals. www.nature.com/scientificamerican/journal/v292/n3/box/scientificamerican0305-46_BX4.html
climate is a serious issue and I don't think it comes across as such with this channel. this presentation style is more suited for an younger audience, but perhaps that's who you're targeting.
Katharine Hayhoe is such a great communicator and very easy to warm to. She needs to be everywhere!!
Thank you for the kind words.
'Fifty years ago, on November 5, 1965, President Lyndon B. Johnson’s White House released “Restoring the Quality of our Environment”, a report that described the impacts of climate change, and foretold dramatic Antarctic ice sheet loss, sea level rise, and ocean acidification. That 1965 White House report stated: “Carbon dioxide is being added to the earth’s atmosphere by the burning of coal, oil, and natural gas at the rate of 6 billion tons a year. By the year 2000 there will be about 25 percent more CO2 in our atmosphere than present.”
Catastrophically, on the 50th anniversary of the White House report, CO2 concentrations in the atmosphere are indeed at 399 ppm: 25 percent over 1965 levels, exactly as predicted 50 years ago.'
'Science.thehill.com/blogs/congress-blog/energy-environment/259342-fifty-years-ago-the-white-house-knew-all-about-climate
Great work Katherine,the more we understand the science, the more we will demand climate action.
Thanks!
Yes, like somehow obtaining the vast amounts of non carbon energy needed to fix it.
Education about the subject of global warming/climate change is one of the greatest challenges of our day. And it is a necessary precursor to action. All styles, all targeted audiences, all types of messengers are needed. A majority of people will soon have to do their part. Thank you for doing yours cheerfully. The world needs you just as you are.
Thank you!
You're so great, all over from Belgrade, Serbia, I saw all the videos, and finally, Milutin Milankovic deserved a mention. Great.
Can’t wait to show this to my class today. One of my fav bits you did!
Thank you!
Love the new show! How do we get a tee shirt?
email jonathan.seaborn@ttu.edu and he'll point you in the right direction.
I have just found your channel, and I love it! Could you put your sources in the description so viewers can look into things further? Thanks!
Great history. I think were a little past 0.6C now aren't we? Isn't it 0.9C to 1.0C now
Anymore videos coming? I hope so.
Jim, we are glad you enjoy the show. A new episode is up now!
Using the physics of the time Arrehmius couldn't determine if the effect of increasing CO2 would be increased temperature or increased cloud cover. Both are a change to the climate but it wasn't possible to model the global climate (usingl modern computers) well enough to know how sensitive temperature is to CO2 concentration.
In addition to the Industrial Revolution's obvious increase of carbon in the atmosphere causing the "screeching halt" of the next ice age, it should be noted that humans have already been exerting their impact on the climate in a gentler, even beneficial way. The Milankovich cycles suggest that there should have been an 8000 year decline, were it not for the human introduction of agriculture. William Ruddiman, paleoclimatologist and Professor Emeritus at the University of Virginia suggests that the unprecedented leveling of our CO2 levels and climate have been the result of humans gradually removing carbon sinks from the planet -- our forests, in the name of agriculture. Since most mass extinction of species happen when there are drastic changes in climate, we have unwittingly been performing a service to biodiversity by being controllers of a biological thermostat. Of course, that was less than one billion people, and there arises biodiversity issues with loss of forest habitats. Although the Industrial Revolution added 0.6 degrees to the world climate, Ruddiman points out that agriculture has gradually created a differential of 0.8 degrees from where the Milankovich cycles suggested we'd be! That means two things -- first, we can stop beating ourselves up over being apart from nature -- nature (with God at the helm, if you will) has enlisted us as keepers of the biothermostat! Second, we have an incredibly powerful tool in modulating both agriculture and deforestation/reforestation, and mitigating fossil fuels isn't the only tool in humanity's global cooling kit. Our choice of food is the key factor in this modulation -- with the crisis created by industrialization (primarily by the energy sector but also by agriculture). If agriculture could be responsible for adding 0.8 degrees to cancel the ice age, we can also cancel a significant portion of the climate crisis by eliminating animals from our diet. How fast can we do it? It's something that I've already done and it's something that you can do today. The fight to keep oil in the ground must continue -- in fact, we may need to have some fossil fuels left in our thermostat tool kit several hundred years from now when the Milankovich cycles start to push that ice age even harder. Whenever anyone talks about geoengineering most methods are treacherous and uncertain. Technology has given us the means to measure our planet's fever (hear that Mr. Trump? We still need NASA) and use an all-natural remedy -- reforestation and elimination of food animals. www.nature.com/scientificamerican/journal/v292/n3/box/scientificamerican0305-46_BX4.html
Grande trabalho dra. Khatarine, desejo que você continue a desempenhar seu ótimo trabalho e que permaneça firme e forte!
anyone else here cause a high school paper?
Her cheerful attitude doesn't fit the topic.
climate is a serious issue and I don't think it comes across as such with this channel. this presentation style is more suited for an younger audience, but perhaps that's who you're targeting.
That is her audience, lol