5. There have been 5 major extinction events throughout history, are humans impacting the 6th? Why or why not?

In my opinion, human would be the next that will extinct. First  reason, is because of the global warming and the carbon dioxide we are creating every day. Secondly, I believe in aliens. Aliens might attack any random time we can not imagine. Lastly, even if human survives throughout global warming, the requirement for ice age to happen is to have a really warm , and hot climate. Humans cannot survive through the ice age, because we got no furs.  We can not evolve fast enough to adapt to the ice cold environment, so unfortunately human would became extinct.