Science and Technology in Society – How do science and technology affect the quality of our lives?

• 9.9 - Some materials can be recycled, but others accumulate in the environment and may affect the balance of the Earth systems.

• New technologies and changes in lifestyle can have positive and/or negative effects on the environment.

D 25

• Explain how land development, transportation options and consumption of resources may affect the environment.

• New England was once all forests.• Deforestation was necessary for living,

transportation, and agriculture.

• People prefer the automobile over mass transportation.

• Most high-level economic countries use far more than they produce. This creates a lot of waste.

D26. Describe human efforts to reduce the consumption of raw materials and improve air

and water quality.

Ways to have a positive impact on the environment…

Can you think of some?

Sloan Valve CompanyChicago IL

Pressing the lever down produces a regular 1.6-gallon flush, while lifting the lever up produces a 1.1 gallon

flush

Composting:the rotten truth

Anne KolaczykPurdue University Master Gardener

©2006Anne Kolaczyk

CompostingComposting is the transformation of organic material (plant matter) through decomposition into a soil-like material called compost.

Invertebrates (insects and earthworms), and microorganisms (bacteria and fungi) help in this transformation.

Why do it Environmentally responsible

Keeps biodegradable waste out of landfills and sewage plants

Alternative to burning Gives you a vibrant garden

without chemical fertilizers Saves money Learning tool

What it involves Adding ingredients Maintaining proper temperature Turning Maintaining moisture Harvesting

Homemade Three bins are best

One to fill One that’s “cooking” One to turn others into or to draw from

What you can compost Yard waste Kitchen scraps Newspaper Cardboard

Care of compost Passive

Let sit Takes months and months

Active Turn often Keep moist (H2O 40-60% of weight) Have proper ratio of C:N (30:1) 2-6 weeks (depending on ingredients)

Let’s get realConcerns Solutions

I don’t have room Use commercial bin

It takes too long Maintain proper conditions Cut up large pieces

It smells Not if you maintain C:N ratio

Temps too low to kill diseases, fungi, weed seeds

Use local community composting facility for problem pieces, compost the rest

Attracts animals Bury food waste in center

Uses Early stages as mulch

Keeps weeds from growing Helps retain moisture Beneficial minerals go into soil

Later stages for soil amending Enriches soil Helps with moisture retention

Removes/reduces need for chemical fertilizers that leach into our ground water

66.20% Burned to produce electricity24.40% Recycled (Does not include Bottle recycling)6.08% Disposed of Out of State3.32% Placed in Landfills

How do you enforce this?