Travel is all about connection: with our planet, with our people, and with our history, culture and spirit.
Together, let us work to protect and respect our planet -- our only home.
The White House responded that there was "no evidence that any life exists outside our planet".
Scientists continue to warn about the dangers that climate change poses to our planet.
We see that in the evangelical leaders who are rallying their congregations to protect our planet.
WHITEHOUSE: President Obama Speaks at National Prayer Breakfast
Promoting our energy independence while protecting our planet from the harmful effects of climate change.
The system of energy that powers our economy also undermines our security and endangers our planet.
But scientists say it came not much closer than 17, 100 miles from our planet's surface.
But scientists say it will come no closer than 17, 100 miles from our planet's surface.
And there's plenty more about the financial crisis at our Planet Money podcast and blog.
That is how we will preserve our planet, commanded to our care by God.
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They can cause long-lasting radiation storms in our planet's upper atmosphere and trigger radio blackouts.
Unchecked, climate change will pose unacceptable risks to our security, our economies, and our planet.
On Earth, geologists study layers of rock to determine the history of our planet.
These particles burn up in our planet's atmosphere, leaving behind brief, bright streaks in the sky.
So those seasons go a little faster because our planet is very literally, moving a little faster.
These discoveries will change the way we understand ourselves, our planet, and its place in the universe.
Though not always as simple or sexy as product innovations, systems innovations are critical for our planet.
The following table summarizes the differences pertinent to security between physical space on our planet and cyberspace.
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That's how we can grow our economy, enhance our security, and protect our planet at the same time.
But Yellowknife seems to be the next best thing: the first truly habitable site outside of our planet.
Protecting the poor and respecting our planet and the resources it provides is an ethical and scientific imperative.
Demographic experts estimate that by 2035, our planet will be home to a little over eight billion humans.
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We have advanced medicine, expanded agriculture and productivity, and opened new frontiers beyond our planet for peaceful purposes.
More seriously, Obama thanked the scientists for devoting their lives to the cause of exploration outside our planet.
Globally just 0.6% of the world's oceans have been protected, compared to almost 13% of our planet's land area.
According to the authors of a new study, this will "spell a definite end to life on our planet".
Iridium is a metal which is rare in our planet's crust but more abundant in many asteroids and meteorites.
The sources of energy that power our economy are also endangering our planet.
It is mankind and his activities that are changing the environment of our planet in damaging and dangerous ways.
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