{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Environmental Issues Day 2

Environmental Issues Day 2 - U.S. ArielRiosBuilding ,N.W...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
U.S. Environmental Protection Agency Ariel Rios Building 1200 Pennsylvania Avenue, N.W. Washington, DC 20460 Dear EPA Headquarters, I recently visited your website at  http://www.epa.gov/ .  I was disappointed as I scrolled through the list of  environmental issues; it was lacking an important issue: global dimming.  I realize only the most essential matters are  in print.  However, I do believe global dimming is as vital as ever.   In the 1940s, researchers began to gain a better understanding of aerosols.  They investigated smoke,  poison gas, and nuclear fallouts, impelled by World War II.  Yet, most never suspected aerosols linked to climate  change.  In the early 1980s, a theory about dinosaur extinction was proposed by Walter and Luis Alvarez.  They  believed a giant asteroid had caused global cooling 65 million years ago as it hit Earth.  The dramatic change in 
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern