If Earth ever suffers a runaway greenhouse effect (like what has happened on Venus), then our atmosphere would trap excess amounts of solar energy, the air temperature would rise, and the oceans would swiftly evaporate into the atmosphere as they sustained a rolling boil. This would be bad.

In the New Testament, Thomas Jefferson cut out everything that was mystical, magical, miracle - physically with scissors - and then pasted in all that remained, such as Jesus's Sermon on the Mount.

Politics will take whatever shape it needs for people to get elected. But at the end of the day, the population remains and that's really, as an educator, who I care about.

It turns out that the history of astrophysics is where we perfected time keeping.

If we want to unlock the secret behind the origin of our sun and its planets, it would be helpful to find some remnants from the birth itself, an event that took place about four-and-a-half-billion years ago.

I have thoughts every day that are themselves tweets.

I can't tell you how many people say they were turned off from science because of a science teacher that completely sucked out all the inspiration and enthusiasm they had for the course.