This website condenses frequently argued climate issues into one- or two-page “at-a-glance” summaries. Bullet-points at the top provide quick, memorable information. Short summaries of a paragraph or two provide additional depth. Many summaries include powerful visual graphs. Embedded links verify the information. The menu above groups the summaries together by category. Heartland will regularly add new summaries.
The purpose of a carbon dioxide tax is to make conventional energy so expensive that people will be coerced into buying wind and solar power, which is already very expensive. When that happens and people purchase expensive wind and solar power, no carbon dioxide taxes are collected, so no revenue is retuned to the people.
Climate alarmists frequently respond to polar vortex events and other extreme cold weather by claiming global warming is to blame. Not only does that defy common sense, it also defies scientific evidence and the findings of the U.N. Intergovernmental Panel on Climate Change (IPCC).
Science is the evaluation of evidence, not a vote or show of hands. Nevertheless, to the extent people claim a scientific consensus exists, there has been only a single science organization whose full membership has been polled on climate-change issues – the American Meteorological Society (AMS)
Coral require warm water, not cold water, to live. Coral cannot live outside of tropical or subtropical waters. (See Figure 1.) As Earth continues to modestly warm, coral are extending their range toward the poles while still thriving at and near the equator.
As global climate modestly warms, U.S. and global crop yields are setting new records almost every year. The same is true for nearly all other nations, too. Thanks in large part to longer growing seasons, fewer frost events, more precipitation, and the fertilization effect of atmospheric carbon dioxide, farmers are producing more food on less land, allowing them to feed a growing global population.
Real-world data show drought in the United States has become less frequent and severe as the climate has modestly warmed. Moreover, the United Nations reports “low confidence” about any negative trends globally.
Occasional heavy precipitation events and floods have always occurred and always will. The U.N. Intergovernmental Panel on Climate Change reports low confidence in any climate change impact on floods, and even acknowledges that climate change is as likely to have reduced flooding frequency and severity as it has been to make them more common.
Devastating hurricanes occurred long before the invention of SUVs and coal-fired power plants. Real-world hurricane activity shows little or no impact from global warming.
Economic strength is the most important factor in determining a nation’s ability to fund and deploy a powerful military over the long term. That is the reason why the United States has by far the world’s most capable military, even though Russia and Canada are larger in size and China and India have far more people.
Global sea level has been rising at a relatively steady pace of approximately one foot per century since at least the mid-1800s. There has been very little recent acceleration in sea level rise.
Climate alarmists warn we must take drastic steps within the next 10 years to keep warming to 1.5°C above pre-industrial conditions. They claim that warming beyond that threshold will unleash a crisis of substantially worse extreme weather events and other climate harms.
Tornadoes typically form when very cold, dry air clashes with very warm, humid air. Global warming warms the Arctic more than the tropics and subtropics, resulting in less of a clash between cold Arctic air masses and warm Gulf of Mexico air masses.
The United States has experienced no significant warming since at least 2005. The lack of warming is documented by the National Oceanic and Atmospheric Administration’s U.S. Climate Reference Network, an extremely accurate network of temperature stations throughout the United States that requires no corrective adjustments.
The majority of U.S. temperature stations utilized for NOAA and NASA temperature records have been compromised by encroachment of artificial surfaces like concrete, asphalt, buildings, and air conditioner exhausts.
Alarmists and their media allies claimed during a recent, short-term decline in Great Lakes water levels that climate change was bringing a new normal of low Great Lakes water levels.