(You normally shouldn't see this. Dang.) Cafe Scientifique Orlando is a gathering of scientifically-inclined people in Central Florida, who meet at a cafe, coffee house, pub, or nonacademic location to discuss events and ideas in the world of science. We enjoy beer and wine, and we use plain language to talk about extraordinary ideas.
Since civilization began some 6000 years ago, the mean temperature of Earth has not varied more than 1°C from the average. The change in temperature of between 1.5 and 4°C (2.7 to 7°F), forecasted for the next hundred years, has no equal in the recent history of the planet. Several natural phenomena do contribute to climate change and most of the past changes in climate can be explained by a combination of them. However, none of these natural phenomena, individually or collectively, explain today’s rapid climate changes. In the short (in terms of geologic time) period that people have inhabited Earth, we have brought about massive changes in the environment, which have had a significant impact on Earth’s climate. Dr. Richard Snow and Dr. Mary Snow examine the evidence and effects of climate change as well as the well-orchestrated attempt to create controversy and disseminate misinformation regarding global warming.
Drs. Richard and Mary Snow are both Associate Professors of Meteorology at Embry-Riddle Aeronautical University in Daytona Beach, and doctors of physical geography with specialties in life sciences. They present research to numerous professional organizations (such as American Meteorological Society, National Weather Association, National Council for Geographic Education, and Association of American Geographers) and published many peer-reviewed papers and refereed-journal articles.
Our next scheduled topic is…
Kardeshev classified civilizations in terms of energy: a Type-I civilization is one that uses all the energy of a single planet, a Type-II uses all the energy of a single solar system, and a Type-III uses all the energy of a single galaxy. These energy levels represent barriers in the sense that we cannot grow a civilization beyond those levels unless we make radical changes in the very nature of the civilization. For example, at the limit of a Type-I civilization, we suddenly discover that we must bring the rest of the solar system into our economic sphere. Unfortunately, the distances between the space resources and the Earth are vast, the transportation costs are high, the environment is harsh for human bodies, and the technologies that are needed to accomplish this have not been developed for any prior economic purpose. Compared to expanding across the globe, even across the oceans, it is much more difficult to expand across interplanetary space. Thus, the Kardeshev classification represents natural barriers that we will hit, waypoints in civilization that require unusual sacrifices, new investments, and extraordinary political will. Business-as-usual driven by the familiar forces of economics will not work — by definition — when we reach one of these barriers. This puts humanity’s global challenges into the correct historic perspective as well as suggesting how they must be addressed. We are presently concerned about global warming, peak oil, resource depletion in general, overpopulation, resource wars, and so on. Rather than thinking of these as separate problems, we should recognize them as elements of the first Kardeshev barrier. If we want to address any of these global challenges effectively, we need to recognize them for what they are and address the basic problem behind them. We need to bring the solar system into Earth’s economic sphere. This talk will discuss the challenges and provide a strategy for getting over the first barrier affordably within our generation. This strategy incorporates the OASIS concept developed by this year’s International Space University plus the Affordable Rapid Bootstrapping concept for lunar and asteroid industry, developed by the speaker.
Philip T. Metzger, Ph.D. works at NASA’s Kennedy Space Center as the lead research physicist and founder of the Granular Mechanics and Regolith Operations (GMRO) Lab, part of the Surface Systems Swamp Works.
Phil has worked in the space program since 1985. He was a part of the Space Shuttle launch team and later with the International Space Station Program testing and assembling spaceflight hardware. For the past 10 years, he has performed research and technology development for solar system exploration (Moon, Mars, asteroids, etc.).
He earned a B.S.E.(electrical engineering) from Auburn University in 1985, a M.S. in physics from the University of Central Florida in 2000, and a Ph.D. in physics from the University of Central Florida in 2005. His doctoral work focused on the theoretical statistical mechanics of granular materials with applications to the mechanics of lunar and planetary soils.
|Skulls of Our Ancestors||14 May, 2013 - 18:00||downtown library|
|After the Maya Apocalypse||1 May, 2013 - 19:00||Taste|
|Nanotechnology Is Already Here||3 April, 2013 - 19:00||Taste|
|New National Wildlife Refuge||6 March, 2013 - 19:00||Taste|
|Teamwork||6 February, 2013 - 19:00||Taste|
|Asteroids, Water, and Life on Earth||9 January, 2013 - 19:00||Taste|
|Poor and Homeless in Florida||5 December, 2012 - 19:00||Taste|
|Seeing cancer before it's too late||7 November, 2012 - 19:00||Taste|
|Marine Ecosystems In Peril||3 October, 2012 - 19:00||Taste|
|A Theory of Everything||5 September, 2012 - 19:00||Taste|
|Digital Ethnography||1 August, 2012 - 19:00||Taste|
|Mastodons in Daytona||6 June, 2012 - 19:00||Taste|