We can make a similar examination, but with greater uncertainty, of the extraterrestrial hypothesis that holds that a wide range of UFOs viewed on the planet Earth are space vehicles from planets of other stars.

The secrets of evolution are death and time-the deaths of enormous numbers of lifeforms that were imperfectly adapted to the environment; and time for a long succession of small mutations.

But down deep, at the molecular heart of life we're essentially identical to trees.

The cosmos is within us. We are made of star stuff

Science is based on experiment, on a willingness to challenge old dogma, on an openness to see the universe as it really is. Accordingly, science sometimes requires courage - at the very least the courage to question the conventional wisdom.

Extraordinary claims demand extraordinary evidence

If we say that God has always been, why not save a step and conclude that the universe has always been?