An asteroid impact is a preventable natural disaster. It's in part preventable because we have the technology, and it's in part preventable because it's predictable.

Steroids do not guarantee you're going to have success. I think a lot of people think that they will, but they don't.

That's what Major League Baseball's steroid scandal was all about, the hidden harm in competitive sports that sends the wrong message to the young.

Several professional athletes have wrongly taught many young Americans by example that the only way to succeed in sports is to take steroids.

These days the temptation to use steroids in sports has become too great for many young athletes.

Sooner or later, we will face a catastrophic threat from space. Of all the possible threats, only a gigantic asteroid hit can destroy the entire planet. If we prepare now, we better our odds of survival. The dinosaurs never knew what hit them.

There are thousands of asteroids whose orbit in the Solar System crosses that of Earth. And we have a little acronym for them - NEOs: near Earth objects. And our biggest goal is to try to catalogue them, so we know in advance if one is going to put us at risk.

We have the capability - physically, technically - to protect the Earth from asteroid impacts. We are now able to very slightly and subtly reshape the solar system in order to enhance human survival.

The stars look the same from night to night. Nebulae and galaxies are dully immutable, maintaining the same overall appearance for thousands or millions of years. Indeed, only the sun, moon and planets - together with the occasional comet, asteroid or meteor - seem dynamic.

It would take an extremely large spacecraft to deflect a large asteroid that would be headed directly for the Earth.

Mining asteroids will ultimately benefit humanity on and off the Earth in a multitude of ways.

If the Earth gets hit by an asteroid, it's game over. It's control-alt-delete for civilization.

Asteroids have us in our sight. The dinosaurs didn't have a space program, so they're not here to talk about this problem. We are, and we have the power to do something about it. I don't want to be the embarrassment of the galaxy, to have had the power to deflect an asteroid, and then not, and end up going extinct.

I do not take steroids. I never have. It's sad to me that people want to point fingers. I don't do that. That's not me. I wouldn't feel like a human being.

If you were to stand on an asteroid in the main belt of asteroids between Mars and Jupiter in our solar system, you might be able to see one or two asteroids in the sky, but they would be very far away and very, very small. So you wouldn't have this 'dodging through tons of rocks' business you get in the movies.

I think while all mothers deal with feelings of guilt, working mothers are plagued by guilt on steroids!

Well, when I think of steroids I think of an image. You have the advantage over someone, which is a form of cheating. I guess it wouldn't be right unless it was legal for everybody. Reason it's not legal for everybody is because it can hurt people seriously.

I'm sure people will wonder if I could have hit all those home runs had I never taken steroids.

Threats that could wipe out the bulk of life on earth abound. Planetary catastrophe could come in the form of a killer asteroid impact, the eruption of massive supervolcanoes, a nearby gamma ray burst that sterilizes the earth, or by human-driven environmental collapse.

If you get asteroids about a kilometer in size, those are large enough and carry enough energy into our system to disrupt transportation, communication, the food chains, and that can be a really bad day on Earth.

I despise the Lottery. There's less chance of you becoming a millionaire than there is of getting hit on the head by a passing asteroid.

Is like finding a diamond asteroid in the rings of Saturn

We are involved in technology development for you know missions that we hope to plan that would take us to an asteroid and eventually to Mars.

These individuals on steroids does it enhance their career does it give them a little more strength a little more stamina a little more psychological edge? Absolutely. How do you determine what - what their stats would be without steroids? It's impossible to tell.