If we ever make contact with an alien civilization, how will we understand what they’re saying? That’s the question that preoccupies John Elliott of...
Carl Sagan wrote that "If you wish to make an apple pie from scratch, you must first invent the universe.” We wish to know our home, so back we go, to the Big Bang, and step by step to today.
This edition combines fun and science as only Dr. Waller can do, as we take a colorful look at what's going on in supposedly empty space between the stars in the Milky Way galaxy.
Earth sits right in the Goldilocks zone. Venus, only a little closer to the sun, has a surface hot enough to melt lead, and Mars is cold enough to have dry ice -- C02 -- at its poles. What can the atmospheres of these three planets tell us about the future of our climate?
