HUMAN IMPACT on the BIOSPHERE Chapter 6-4 Charting a course for the Future

1. HUMAN IMPACT on the BIOSPHEREChapter 6-4Charting a course for the Future http://www.claybennett.com/pages2/mistletoe.html

2. ENVIRONMENTAL PROBLEMS ___________________ ___________________ ___________________ ___________________ ___________________ http://www.acmecompany.com/stock_thumbnails/13808.greenhouse_effect_2.jpg

3. DEAD ZONES REMEMBER ! When an ecosystem receives a LARGE input of limiting nutrient (ie., fertilizer runoff) the population increases dramatically = ___________

7. Gulf of Mexico Dead Zone The DEADZONE forms each April, generally grows throughout the summer, reaching a peak in late July. http://www.ncat.org/nutrients/hypoxia/hypoxia.html

8. Gulf of Mexico Dead Zone http://serc.carleton.edu/microbelife/topics/deadzone/index.html At its peak, the nearly lifeless water can span 5,000 to 8,000-plus square miles, an area almost the size of New Jersey

9. DEAD ZONESHow do we HELP? • Use modern technology and • “green” farming methods to: • Decrease agricultural fertilizer use • Decrease runoff of agricultural waste

10. http://www.planetguide.net/book/chapter_5/ozone_layer.html OZONE LAYER Our atmosphere between 20-50 km contains high concentrations of ____________ which protect us from the sun’s harmful ______________ radiation. http://pubweb.bnl.gov/users/xujun/www/bnl/ozone_layer_1.gif

11. EFFECTS OF UV RADIATION __________________________________ ________________________ of skin __________________________________ Reduces ________________ Disrupts __________________ in oceans Click here to see a movie about the effects of UV radiation WMV, 618K

12. WHAT WE KNOW Scientists have been monitoring the ____________ of ozone in our atmosphere and have discovered a hole in the ozone layer over ____________. Click here to see a movie about the ozone hole WMV, 616K http://ozonewatch.gsfc.nasa.gov/facts/hole.html

13. The annual ozone "hole“ over Antarctica has occurred during the Antarctic Spring (October) since the early 1980s. Rather than being an actual hole through the layer, the ozone hole is a large area with extremely low amounts of ozone. Ozone levels fall by over 60% during the worst years. http://ozonewatch.gsfc.nasa.gov/facts/hole.html

14. Ozone depletion is a global issue NOT just a problem at the South Pole. Research has shown that ozone depletion also occurs over North America, Europe, Asia, and much of Africa, Australia, and South America. Over the U.S., ozone levels have fallen 5-10%, depending on the season. http://home.casema.nl/daveduijn/globe2.gif

15. What’s the cause of Ozone Depletion? Chlorofluorocarbon molecules _______ released from air conditioners, aerosol spray cans, fire extinguishers, and industry ________________ http://www.atm.ch.cam.ac.uk/tour/part3.html

16. OZONE DEPLETION HOW DO WE HELP? 1987- the _______________________ committed signing nations (including USA) to a ____________ in the use of CFCs and other ozone-depleting substances. CFC production was _________ after 1995 in the developed countries, and later in developing countries. Today, over 180 countries have ratified the treaty.

17. THAT’S WHY . . . http://www.roundrocktexas.gov/images/spray_cans_large.jpg _____________spray cans no longer contain CFC propellants. Gases in ___________________ and _____________ are collected and recycled.

18. OZONE DEPLETIONHow do we help? We can't make enough ozone to replace what's been destroyed, but provided that we stop producing ozone-depleting substances, computer models predict natural ozone production reactions should return the ozone layer to normal levels by about 2050. This is the first example of different countries getting together on an environmental issue, agreeing on what to do, doing something, and seeing a positive effect http://www.gifs.net/image/Words/Wow/Wow_rotates/4031

19. ACID RAIN What’s the cause?________________________ Chemical Transformation Nitric acid Sulfuric acid Condensation Emissions to Atmosphere Nitrogen oxides Sulfur dioxide Dry Fallout Precipitation Acid rain, fog, snow, and mist particulates, gases Industry Transportation Ore smelting Power generation Releases _______________ and ________________ into the atmosphere that react with water toproduce ACID RAIN.

20. http://www.robl.w1.com/Pix/C900991.jpg http://www.geocities.com/kamil_pollutionpage/AcidRain.htm http://www.abc.net.au/quantum/scripts99/9905/img/asthma.jpg http://www.scienceacross.org/media/samplingforacidrainNOAAedSAW.jpg

21. ACID RAIN EFFECTS • damages buildings and statues • damages forests • kills fish • reduces biodiversity • causes illness & premature death from heart & lung disorders like asthma and bronchitis

22. ACID RAIN Develop a National energy policy that emphasizes use of alternative renewable energy sources HOW DO WE HELP? Cut down on activities that use fossil fuels conserve electricity drive less Drive automobiles with increased fuel efficiency OR run on alternative fuels Recycle (uses less energy than starting from scratch)

23. GREENHOUSE EFFECT Temperatures of Earth remain within a range ______________ because the _____________ acts as a natural _________________ blanket. http://wwwstatic.bayareawritingproject.org/images/bawp41/earthAtmosphereIMG.gif

24. GREENHOUSE EFFECT Atmospheric gases such as ___________________ ___________________ ___________________ ___________________ NORMALLY trap heat energy from the sun like a greenhouse = _____________________ http://www.acmecompany.com/stock_thumbnails/13808.greenhouse_effect_2.jpg

25. GLOBAL WARMING- Is it real? Some people say that the Earth hascycles of warmer/cooler climate change and that this is just part of that cycle. Most scientists believe that the increase inglobal temperatures is the result of humanactivities that have increased the amount ofCO2 and other greenhouse gases in theatmosphere

26. In 2007 in Paris a U.N.- backed panel of international scientists issued a major announcement on climate change stating that: 1. "warming of the climate system is unequivocal“ 2. There is a 90% probability the cause “man- made”. Either way… our planet is getting warmer!

27. FACTS WE KNOW Global mean surface temperatures have increased 0.5-1.0°F since the late 19th century. The 20th century's ten warmest years have occurred in the last 15 years of this century. http://content.answers.com/main/content/wp/en/thumb/8/87/280px-Instrumental_Temperature_Record.png

28. FACTS WE KNOW The snow cover in the Northern Hemisphere and floating ice in the Arctic Ocean have decreased. Graph & glacier pix: http://nsidc.org/sotc/glacier_balance.html polar bears: http://www.metro.co.uk/news/article.html?in_article_id=35720&in_page_id=34

29. FACTS WE KNOW Greenhouse gases in the atmosphere have increased steadily. http://en.wikipedia.org/wiki/Image:Major_greenhouse_gas_trends.png

30. GLOBAL WARMING WHAT’S the CAUSE? • Burning solid waste, fossil fuels (oil, natural gas, and coal), wood and wood products • Production and transport of fossil fuels • Decomposition of organic wastes in landfills • Animal sources (methane) • Deforestation(trees remove CO2 from atmosphere)

31. What’s so bad about warming up a little? We’re freezing here in S.D.!

32. What’s so bad about warming up a little? http://healthandenergy.com/images/global2.gif Cartoon from Brookings Register Coastal flooding

33. http://www.claybennett.com/pages/ocean_temps.html What’s so bad about warming up a little? Changes in Gulf Stream http://zfacts.com/metaPage/lib/Atlantic_conveyor.jpg

34. What’s so bad about warming up a little? http://en.wikipedia.org/wiki/Hurricane_Katrina More severe storms http://i.a.cnn.net/cnn/2005/WEATHER/08/25/tropical.storm/story.katrina.915p.jpg

35. What’s so bad about warming up a little? Weather extremes http://www.cactus-art.biz/note-book/Dictionary/aaa_Dictionary_pictures/drought.jpg Heat waves and drought Brookings Register

36. What’s so bad about warming up a little? http://www.metro.co.uk/news/article.html?in_article_id=35720&in_page_id=34 Changing habitats means loss of species

37. What’s the Kyoto Accord got to do with it? The Kyoto Accord is an agreement, aimed at reducing global warming that asks participants to __________ their ________________ emissions to a percentage of their 1990 emission levels _____________.

38. PROBLEMS WITH the KYOTO ACCORD (The US has not ratified this agreement) In 1998-Clinton administration signs the Kyoto Accord committing the United States to a 7% reduction in carbon dioxide and other greenhouse gas emissions from 1990 emissions levels, to be achieved between the years 2008 and 2012. 2001- Bush administration withdrew the U.S. signature, claiming that the treaty was "fatally flawed".  2008- Australia (last major nation hold out) signed 160 nations have now agreed (not US)

39. PROBLEMS WITH the KYOTO ACCORD ALL countries not required to reduce emissions equally 7% for the US, 6% for Japan, 0% for Russia, Developing nations don’t have to reduce emissions at all India and China, which have ratified the protocol, are not required to reduce carbon emissions under the present agreement despite their relatively large populations. Developed nations (like USA) can meet required reductions by purchasing emission reductions from elsewhere and funding developing countries for climate related studies, projects, and technology

40. KYOTO is “OLD NEWS”! Standards set by Kyoto will expire in 2012. United Nations Meetings on Global Climate Change Dec 2008- 190 countries met in Bali, Indonesia and set“Road Map” for negotiations on a replacement for Kyoto Accords March 29-April 8, 2009 – Bonn, Germany Sept-Oct 2009 - Bangkok, Thailand December 2009 - Copenhagen, Denmark http://unfccc.int/meetings/items/2654.php

41. http://www.gifanimations.com/animation/MenuSelection/1/56 What is a CARBON FOOTPRINT? A ____________________ = the total set of GHG (greenhouse gas) emissions caused directly and indirectly by an individual, organization, event or product http://www.nature.org/initiatives/climatechange/calculator/

42. The US is no longer the #1 CO2 emitter http://www.chrismadden.co.uk/eco/china-carbon-footprint.html but . . . we contribute to the problem.

43. http://matadornetwork.cachefly.net/bravenewtraveler.com/docs//wp-content/images/posts/20080418-planet.jpghttp://matadornetwork.cachefly.net/bravenewtraveler.com/docs//wp-content/images/posts/20080418-planet.jpg Even if you don’t “believe” in global warming . . . Even if countries can’t agree on emission levels … we should still work to reduce our emissions of global warming gases BECAUSE . . .

44. http://www.inkcinct.com.au/Web/CARTOONS/2005/2005-379C--last-fossil-fuel.gifhttp://www.inkcinct.com.au/Web/CARTOONS/2005/2005-379C--last-fossil-fuel.gif THINGS WE DO TO “FIX GLOBAL WARMING” make sense anyway! Fossil fuels are a limited resource… eventually they will be gone!

45. THINGS WE DO TO “FIX GLOBAL WARMING” make sense anyway! http://healthandenergy.com/global_warming_cartoons.htm Our supply of fossil fuels is dependent on countries that are not “friendly” to the U.S.

46. THINGS WE DO TO “FIX GLOBAL WARMING” make sense anyway! Brookings Register Drilling for and transporting fossil fuels has negative environmental consequences

47. THINGS WE DO TO “FIX GLOBAL WARMING” make sense anyway! Drilling and transporting fossil fuels has negative environmental consequences Brookings Register

48. THINGS WE DO TO “FIX GLOBAL WARMING” make sense anyway! Images from: http://www.cartoonstock.com/directory/R/Renewable_energy.asp Innovation and alternative energy technologies for automobiles and power generation are good for our economy

49. GLOBAL WARMING Develop a National energy policy that emphasizes use of alternative renewable energy sources HOW DO WE HELP? Watch your carbon footprint Cut down on activities that use fossil fuels Drive automobiles with increased fuel efficiency OR run on alternative fuels Cut down on CO2 emissions (with or without the Kyoto accord) Recycle (uses less energy than starting from scratch) Reduce deforestation (plants use CO2)

50. WHAT DO WE DO WITH OUR TRASH? According to the Environmental Protection Agency, the average American produces about 4.4 pounds of garbage a day. That adds up to a approximately 220 million tons of garbage each year for all of us. This only takes into consideration the average household member and does not count industrial waste or commercial trash. http://blog.lib.umn.edu/stau0156/architecture/garbage%20can.jpg