Fine-tuned...

Consider these facts about the earth...

1. If the centrifugal force of planetary movements did not precisely balance the gravitational forces, nothing could be held in orbit around the sun.
2. If the universe had expanded at a rate one millionth more slowly than it did, expansion would have stopped, and the universe would have collapsed on itself before any stars had formed. If it had expanded faster, then no galaxies would have formed.
3. Any of the laws of physics can be described as a function of the velocity of light (now defined to be 299,792,458 meters per second). Even a slight variation in the speed of light would alter the other constants and preclude the possibility of life on earth.
4. If water vapor levels in the atmosphere were greater than they are now, a runaway greenhouse effect would cause temperatures to rise too high for human life; if they were less, an insufficient greenhouse effect would make the earth too cold to support human life.
5. If Jupiter were not in its current orbit, the earth would be bombarded with space material. Jupiter's gravitational field acts as a cosmic vacuum cleaner, attracting asteroids and comets that might otherwise strike earth.
6. If the thinkness of the earth's crust were greater, too much oxygen would be transferred to the crust to support life. If it were thinner, volcanic and tectonic activity would make life impossible.
7. If the rotation of the earth took longer than twenty-four hours, temperature differences would be too great between night and day. If the rotation period were shorter, atmospheric wind velocities would be too great.
8. The 23-degree axil tilt of the earth is just right. If the tilt were altered slightly, surface temperatures would be too extreme on earth.
9. If the atmospheric discharge (lightning) rate were greater, there would be too much fire destruction; if it were less, there would be too little nitrogen fixing in the soil.
10. If there were more seismic activity, much more life would be lost; if there was less, nutrients on the ocean floors and in river runoff would not be cycled back to the continents through tectonic uplift. (Yes, even earthquakes are necessary to sustain life as we know it!)

Is there evidence of divine design in creation?

From I Don't Have Enough Faith to Be an Atheist by Norman L. Geisler and Frank Turek, p 105-106.