Sigh, people really need to dig more into subjects than a single video, or just looking at sites that are there to confirm their suspicions. Unfortunately, the OP has fallen victim to the logical fallacy of "Appeal to Authority"...and, more specifically, "Appeal from False Authority".
https://www.skepticalscience.com/iva...scientist.htmlI am not really terribly interested in global warming. Like most physicists I don't think much about it. But in 2008 I was in a panel here about global warming and I had to learn something about it. And I spent a day or so - half a day maybe on Google, and I was horrified by what I learned. And I'm going to try to explain to you why that was the case.
- Ivar Giaever {person in the linked video}
It's worth reading the entire article I've linked here as it explains the bad assertions and assumptions that Ivar made in his talk.
If you like to watch videos, here are a couple from Nobel Laureates who have actually researched the topics in their presentations:At this point we're 9 minutes into Giaever's 32-minute presentation, and he begins comparing climate science to religion. Yet based on his arguments in those first 9 minutes, it's clear that Giaever has not done even the most basic climate research, so how can he possibly make such a radical determination?
While Giaever is certainly a highly accomplished physicist, that does not automatically make him a climate expert as well. As Giaever himself has admitted, he has spent very little time researching the subject, and it shows. He simply bounces from one climate myth to the next, demonstrating a lack of understanding of Climate Science 101, and then insults the entire scientific field by comparing it to a religion, bringing life to the xkcd cartoon at the top of this post.
http://www.mediatheque.lindau-nobel....hropocene-2012
http://www.mediatheque.lindau-nobel....te-change-2012
If you would like more mundane explanations for what is going on, Phil Plait does a good job of explaining the complexities of it all, and why global warming is indeed happening.
http://www.slate.com/blogs/bad_astro..._to_grasp.html
http://www.slate.com/blogs/bad_astro...ier_claim.html
http://www.slate.com/blogs/bad_astro..._happened.html
Additionally, there are a plethora of resources available that give tons of evidence and proof...here are a small sampling of different types:
https://climate.nasa.gov/evidence/ (go there while you still can as I'm sure the current administration will be working to erase that info eventually)
http://www.rollingstone.com/politics...-math-20120719
https://webcache.googleusercontent.c...&ct=clnk&gl=us (Libertarian CATO Institute agrees its real)
Interestingly, here are some stories of die hard climate warming skeptics who changed their minds after actually digging deep into the evidence:
https://theintercept.com/2017/04/28/...t-for-science/
http://www.cnn.com/2016/08/24/opinio...hange-weather/
http://www.care2.com/causes/climate-...-his-mind.html (for those not familiar, Professor Richard Muller was the loudest critic of climate change and one of the most powerful leaders...until his own study led him to the truth)
A very recent and amusing article on the subject...Fox News acknowledged that climate change is real just before Trump officially pulled out of the Paris agreement - https://www.vox.com/policy-and-polit...te-change-real