Hoover Institution 
Steven Koonin reviews the state of climate science, focusing on data trends, climate models, and the uncertainties involved. He highlights issues with climate models, including their high sensitivity and inability to accurately reproduce historical temperature changes, cautioning against relying on inaccurate model projections.
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They can be programed to prove or disprove your point. They also leave out so many variables they are not accurate.
Life flourishes under warming.
It was really really really cool to be able to hear someone coughing through the entire talk. I like that a lot and I wish more talks had it.
A great lecture! I enjoyed his book Unsettled. The world needs to proceed very carefully on how the negative effects of climate change are dealt with. Mistakes and politically-induced missteps can be fatal.
Thanks for a very enlightening lecture.
It's the obligation of everyone to believe in climate change and support politicians who support it. Climate change denial is racist.
Does aluminum float?
27 = molecular weight of aluminum
44 = molecular weight of CO2
18 = molecular weight of H2O
15 = molecular weight of air
Why not mention the "fact" that CO2 is 50% heavier than aluminum?
Why not mention the "fact" that CO2 is more than 100% heavier than H2O?
Why not mention the "fact" that CO2 cannot physically accumulate in the atmosphere?
Why not mention the "fact" that the "green transition" is based on a physical impossibility?
Less CO2 is a crime against humanity.
More CO2 means more plants, more crustaceans, more corals, more diatoms and more food for humanity at a lower cost which means less world hunger.
Less CO2 means less of all life at a higher cost and is a crime against humanity.
Debate about models isn’t really necessary when these days one only has to look at the news.
Thank you.
Adding to what others have said, "Unsettled" is a brilliant book and well worth the time and money.
Danke für diesen hervorragenden Vortrag. Es ist dringend notwendig die Hysterie in Zusammenhang mit Wetter und Klima zu beenden. Ich befürchte, dass es in Deutschland bereits zu spät dazu ist. Die Unterbelichteten haben die Macht an sich gerissen.
Exactly how does a 2 part in 10,000 parts increase in atm CO2 concentration spread out over an approx 100 year time span constitute a "climate crisis? Is there scientific evidence that substantiates such a claim?
UN IS DOING THE EXACT OPPOSITE
we reached 1.6 degrees today……
Is Prof Guy Mc Phersons , prof emerit in Biology ….reliable?
I live in Italy, net zero is NOT WORKING !!!
amazing work of denial
7:50 The main problem is that study Koonin mentions only went through 2010, and ice losses have accelerated since then. There’s been a steeper and longer lasting decline in recent decades compared with the pre-World War II period he mentioned. The overall trend is that losses have been more sustained and deeper than during this pre-WWII period.
The latest report card for the Greenland ice sheet from the National Oceanic and Atmospheric Administration (https://arctic.noaa.gov/Report-Card/Report-Card-2020/ArtMID/7975/ArticleID/901/Greenland-Ice-Sheet) said that in 2012 and 2019, the ice sheet saw its greatest losses since regular monitoring began in the 1950s. In 2012, it shed about 464 gigatons, and in 2019, it lost about 532 gigatons.
Following a period of relative stability from the 1970s to early 1990s, the ice sheet began losing ice at an accelerating rate and has now experienced annual net ice loss every year since 1998. Experts agree that a period of warmer temperatures caused a large loss of ice in the 1930s. But the most recent data shows a period of steeper and longer lasting declines in the Greenland ice sheet between 2010 and 2020 than in the period 80 years ago.
There is uncertainty in the data, but Koonin’s numbers are incomplete and obscure the scale of recent ice losses.
Koonin is misrepresenting the data.
Ask Koonin to give the year of Earth's warmest Jan, Feb… Dec. Every right wing shill has been proven wrong each and every decade. Hoover Institute? Almost as bad as Heartland.
Follow the money. Heartland, Hoover, Friends of Science, Fox, etc.
Of course you get a blue propaganda bar because you tell the truth. Only the weather channel and YouTube are allowed to tell us about climate change, and even though they are proven wrong, we have to swallow their lies. F YT.