One of the discoverers of the structure of DNA, Watson or Crick, thought that there has not been time in the presently estimated lifetime of the universe for the variety of lifeforms on earth to have evolved. 13 billion years is not enough. There might be a problem with the Big Bang model, maybe a too literal interpretation of what might actually be only an appearance--a virtual beginning. The universe might be infinitely old in spite of appearances.
I just posted the article so I could see all the penguin pictures everyone would put on here - LOL.