Mr. Hartan's Science Class
"Knowledge is a reckoning . . . a way to assess your location, your true position, not a strategy for improving your position." -Walter Kirn-Archive for October, 2008
Two Planets Needed by 2030 at this Rate, Warns Report.
Wednesday October 29 2008
The world is heading for an “ecological credit crunch” far worse than the current financial crisis because humans are over-using the natural resources of the planet, an international study warns today. READ ON.
Why Learn Chemistry?: A Case Study
Click on the following link: http://kathyschrock.net/eval/dhmo.pdf. This will open a PDF document. Read the article and take a position:
Question 1:
Should Dyhydrogen monoxide, in your opinion be banned? If yes, list two reasons why (and explain) and if no, list two reasons why not (and explain).
Question 2: Why is an understanding of chemistry important?
Bottled Water vs. Tap Water
From the Los Angeles Times
Bottled water versus tap: Which is safer to drink?
Both have their risks, but your home’s water is subject to broader scrutiny.
Bottled and tap water come from essentially the same sources and are subject to the same contaminants. Some products on store shelves are, in fact, tap water, filtered and treated for taste. (Scott Olson / Getty Images / July 27, 2007)
“Bottled water isn’t any safer or purer than what comes out of the tap,” says Dr. Sarah Janssen, science fellow with the Natural Resources Defense Council in San Francisco, which conducted an extensive analysis of bottled water back in 1999. “In fact, it’s less well-regulated, and you’re more likely to know what’s in tap water.” Click HERE to read the full article.
Why Save Endangered Species? Why Care About Biodiversity?
READ THE FOLLOWING ARTICLE:
http://www.fws.gov/Endangered/pdfs/Why_Save_End_Species_July_2005.pdf
QUESTIONS:
1. List 6 reasons why we should care about saving endangered species.
2. Look up and provide a description of one endangered species in the Northeast
3. Do you agree or disagree with the article? Explain.
‘Fossil’ HIV reveals virus history
Bianca Nogrady
[Scientists] concluded the strains evolved from a common ancestor that emerged in Africa near the beginning of the twentieth century around 80 years before the disease appeared in western populations. READ ON.
