If the Sun is indeed 4.6 billion years old, it should have brightened by nearly 40% over its life time. Evolutionists maintain that life appeared on the Earth around 3.8 billion years ago. Since then, the Sun would have brightened about 25%. A 25% increase in solar luminosity increases the average temperature of the Earth by about 18 degrees Celsius. The current average temperature of the Earth is about 15 degrees Celsius, the average temperature of the Earth 3.8 billion years ago would have been below freezing (-3 degrees Celsius). (Faulkner, D.R., The young faint Sun paradox and the age of the solar system, Impact (ICR) 300, 1980. Lenton, T.M., Gaia and natural selection, Nature 394(6692):439-447, 1998.)
Hemoglobin is too complex. The protein hemoglobin is specific to 10E650, and the DNA of the T4 phage is specific to 10E78000. Since such specificities could not possibly be developed by "Natural Selection" in a universe only 10E18 seconds old, it follows that Darwin was wrong. (David Foster, The Philosophical Scintist, p. 83.)
