The Origin Of Life Is

General Relativity Is The Cornerstone Of Cosmology And Astrophysics. It Has Also Provided The Conceptual Basis For String Theory And Other Attempts To Unify All The Forces Of Nature In Terms Of Geometrical Structures.

Cancer Cells Come Pre-programmed To Execute A Well-defined Cascade Of Changes, Seemingly Designed To Facilitate Both Their Enhanced Survival And Their Dissemination Through The Bloodstream. There Is Even An Air Of Conspiracy In The Way That Tumours Use Chemical Signals To Create Cancer-friendly Niches In Remote Organs.

In The 1990s I Began To Study The Prospects That Life Could Spread From Mars To Earth Or Maybe Earth To Mars And That Maybe Life Began On Mars And Came To Earth, And That Idea Seemed To Have A Lot Of Traction And Is Now Accepted As Very Plausible.

I Should Say We Know That There Are Many, Many Other Earths Out There. We're Almost Certain That There Will Be Upwards Of A Billion Earth-like Planets In Our Galaxy Alone, So There Is No Lack Of Real Estate Where Life Might Happen, But What We Don't Know Is How Likely It Is Given The Real Estate, Given A Wonderful Pristine Planet Like Earth How Likely Is It That Life Will Pop Up Inhabited? We Don't Know The Answer To That.

No Intelligent Supervisor, No Mystic Force, No Conscious Controlling Agency Swings The Molecules Into Place At The Right Time, Chooses The Appropriate Players, Closes The Links, Uncouples The Partners, Moves Them On. The Dance Of Life Is Spontaneous, Self-sustaining, And Self-creating.