Like a snowplow in overdrive, a supernova shockwave might sweep away any gas clouds in its path.

I can't think that leaving Earth once is enough.

Some claim evolution is just a theory. As if it were merely an opinion. The theory of evolution, like the theory of gravity, is a scientific fact. Evolution really happened. Accepting our kinship with all life on Earth is not only solid science. In my view, it’s also a soaring spiritual experience.

Wanting to do one thing can require that you take on other interests.

Photons are accurately and legitimately described as waves and particles at the same time. They are genuine wavicles.

Your center of mass is a place you cannot visit but you always carry with you. Like memories, it is part of life's baggage.

I try to keep this in mind when tied in to a rope 75 feet up in a tree... The history of ideas about our place in the universe has been a long series of let-downs for those who like to believe we are special.