Without this blast we wouldn't most probable be here. After this Earthly big bang Earth has been a battle ground between micro-organisms, insects and mammals and some more minor groups. We know of no trend in the evolution of micro-organism and insects, only random adaptations to changing environments. The last 50 million years the Earth has continually cooled disregarding some standstills and minor warmings that all have been temporary. The last phase in this climatic deterioration has been the oscillating temperature that began as a minor series of events about 3 million years ago and changed to the famous 100,000 ice age oscillation some 800,000 years ago.
Evolution has many faces.