Yes, climate change is real, and yes, humans are a large part of the cause.
There are many reasons why climate change is considered to be very real, but going into detail would just reiterate what you learn in climate- and weather-related classes.
It’s more like our real estate options are dwindling. There will likely be more extreme weather events, less land than before and higher average global temperatures. But that does not mean all seven continents are going underwater or that earthquakes will render the surface of the earth unlivable.
The impact of climate change means that we are going to have to adapt to an ever-changing earth. People will have to move from the coasts, millions will experience malnourishment and people will die. Now, that’s on the extreme side of the predictions, but does that sound like the end of the human race and life altogether? Not to trivialize the possible implications of climate change, but extinction does not seem to be the likely scenario. Realistically, we are looking at events that could cut our populations, but the human race will likely thrive.
Global warming is not the only risk our society faces. Even if science tells us that climate change is real and man-made, it does not tell us, as Former President Obama asserted, that climate change is the greatest threat to humanity.
Global warming is not even the obvious top environmental threat. Dirty water, dirty air and insect-borne diseases are a far greater problem today for most people world-wide. Habitat loss and human predation are a far greater problem for most animals. Elephants won’t make it to see a warmer climate. Climate policy advocates’ apocalyptic vision demands serious analysis, and mushy thinking undermines their case. If carbon emissions pose the greatest threat to humanity, it follows that the costs of nuclear power—waste disposal and the occasional meltdown—might be bearable. It follows that the costs of genetically modified foods and modern pesticides, which can feed us with less land and lower carbon emissions, might be bearable. It follows that if the future of civilization is really at stake, adaptation or geo-engineering should not be unmentionable. And it follows that symbolic, ineffective, political grab-bag policies should be intolerable.
Our situation is precarious, but fearmongers who claim the earth is at a tipping point do a disservice to climate scientists and science as a whole. They do not represent the facts and they misunderstand the human race. We are explorers, inventors, artists and pioneers — we are going to push through any challenge.