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Big Idea #1: Earth scientists use repeatable observations and testable ideas to understand and explain our planet.

Big Idea #2: Earth is 4.6 billion years old.

Big Idea #3: Earth is a complex system of interacting rock, water, air and life.

Big Idea #4: Earth continuously changing.

Big Idea #5: Earth is the water planet.

Big Idea #6: Life evolves on a dynamic Earth and continuously modifies Earth.

Big Idea #7: Humans depend on Earth for resources.

Big Idea #8: Natural hazards pose risks to humans.

Big Idea #9: Humans significantly alter the Earth.

Yesterday’s Presidential Inauguration --- Comments on energy and environment:

We will respond to the threat of climate change, knowing that the failure to do so would betray our children and future generations. Some may still deny the overwhelming judgment of science, but none can avoid the devastating impact of raging fires, and crippling drought, and more powerful storms. The path towards sustainable energy sources will be long and sometimes difficult. But America cannot resist this transition. We must lead it. We cannot cede to other nations the technology that will power new jobs and new industries. We must claim its promise. That’s how we will maintain our economic vitality and our national treasure, our forests and waterways, our crop lands and snow capped peaks. That is how we will preserve our planet, commanded to our care by God. That’s what will lend meaning to the creed our fathers once declared.

What are the three things about America’s energy future that most concern you? 1) 2) 3)

What are the three things about America’s energy future that most concern you? 1) 2) 3) What are the three things about America’s energy future that most give you reasons to be optimistic? 1) 2) 3)