World leaders are currently participating in the United Nations Climate Change Summit in Scotland. 

Their mission is to quickly reduce greenhouse gas emissions and limit the dangers that all of us face in the future more extreme heat, drought, fires, floods and hurricanes.

When these leaders met, the WFAA decided to study 10 common statements related to climate change and verify that they are true.

Determining the exact amount of energy you can save when using a light bulb depends on the wattage of the light bulb and the cost per kilowatt hour of your electricity supplier.

The type of bulb you use can also have an impact, such as incandescent, halogen, LED, or fluorescent light.

The U.S. Department of Energy has an easier way to determine whether you save more energy by turning off the lights. If you will return to the room within 15 minutes, you can leave the light on.

If you are away for more than 15 minutes, then you can save more energy by keeping it off. This will also extend the life of the bulb. 

So we can verify that if you are away for more than 15 minutes, turning off the fluorescent lights can save more energy.

Sunspots are storms on the surface of the sun that produce magnetic activity and appear darker than the surrounding area.

According to the National Weather Service, these temporary phenomena are regions where the magnetic field strength is about 2,500 times stronger than that of the Earth. Due to this strong magnetic field, the magnetic pressure rises while the surrounding atmospheric pressure drops.

According to recent scientific data from NASA, the energy from sunspots has not had a significant impact on the earth's temperature in the past 40 years.

NASA says that if sunspots are a legitimate threat, all layers of the atmosphere will warm. This will not happen.

The only possible cause of global warming is that it is caused by emissions from things that absorb heat, such as factories and cars. 

The scientific community overwhelmingly agreed with this analysis.

So we can verify, no, sunspots are not the cause of the increase in the average temperature of the earth-they are our emissions.

According to multiple studies, including a study from the Wageningen Life Science Journal, it is estimated that more than half of the world’s chocolate is produced in West African countries.

According to data from the Yale University School of Environment, Ivory Coast has lost more than 80% of its forests in the past 50 years.

According to the US environmental organization Mighty Earth, about 40% of the cocoa crop in Côte d’Ivoire is illegally grown in the country’s national parks and government-owned forests.

Most cocoa requires plenty of sunlight, so the forest must be cleared to allow the crop to grow.

So we can verify that, yes, chocolate production often leads to deforestation, which is a driving factor for climate change.

Carbon dioxide plays a key role in the earth's atmosphere. It helps to maintain heat, and when it is in equilibrium, it helps to keep the earth's temperature just right.

When it increases, the energy of the earth will lose its balance and the average temperature of the earth will rise.

According to the leading research of the United Nations, the concentration of greenhouse gases in our atmosphere has reached a record high.

According to the Secretary-General of the World Meteorological Organization Petri Talas, the first time such a high concentration of carbon dioxide appeared on the earth was 3 to 5 million years ago.

So we can verify that, yes, the world's carbon dioxide levels are now higher than at any time in the past 3 million years.

The three key elements required for most beer are water, barley and hops.

A 2018 Nature Research study showed that extreme drought and high temperatures caused by climate change will greatly reduce the world's beer supply and increase beer prices in the next few decades.

According to the study, it is very difficult to harvest barley, the main component of beer, during periods of extreme drought and high temperatures. Therefore, as the temperature continues to rise, the supply and distribution of barley in the major countries that contribute to brewing beer will be negatively affected.

There are other studies that also reflect this potential problem in the beer market, including a recent report by the World Wildlife Fund.

Therefore, we can confirm that, yes, extreme drought and high temperatures are affecting the global beer supply and may lead to higher costs.

It is best to make most coffees in climates where the temperature ranges from cool to warm in the 60s or 70s.

The more the earth’s climate warms, the more problems the coffee machine faces. If the temperature is too high, these fruits will ripen faster, which will reduce the quality of the beans.

According to a report by the National Oceanic and Atmospheric Administration of the United States, if the temperature exceeds 86 degrees, it may even cause serious damage to coffee plants, including slow growth, yellowing of the leaves and the formation of stem nodules.

NASA's surface analysis found that since the beginning of the 20th century, the average temperature of the earth has risen by nearly 1 degree Celsius.

Therefore, as the temperature in the coffee-growing area rises, coffee growers have to move to farther mountains to get cooler air.

For example, according to a study published in the journal Nature Plants, as the temperature changes, by the end of this century, the coffee plantation area in Ethiopia may be reduced by 39% to 59%.

There are other reports and studies that show that rising temperatures will bring producers uphill, including a study by the Institute of Climate Studies, which stated that by 2050, climate change is expected to reduce the world’s area suitable for coffee production by as much as 50%.

So we can verify that, yes, climate change is affecting certain coffee products in Africa.

According to a study by the U.S. Environmental Protection Agency, in 2019, the agricultural sector accounted for 10% of all greenhouse gas emissions in the United States. This includes livestock, agricultural soil and rice production.

Cattle, goats, sheep and other livestock produce large amounts of methane when they digest food. When food enters the stomach, bacteria partially break down the food and then ferment in the stomach. This produces methane gas.

According to data from the Food and Agriculture Organization of the United Nations, the greenhouse gas emissions generated by animal husbandry account for about 15% of the total global greenhouse gas emissions. According to a NASA study, the amount of methane released into the atmosphere has more than doubled since the 1850s, largely due to the increasing demand for beef and dairy products.

So we can verify that, yes, livestock does cause climate change.

These mammals live and hunt on ice for a long time.

According to the US National Oceanic and Atmospheric Administration, the Arctic is warming about twice as fast as the rest of the world. This causes the ice to melt earlier and come back later this year.

However, a scientific study by Global Change Biology in 2020 shows that thinner ice actually leads to more algae growth, which brings more fish and seals to the polar bears for food and survival.

According to data from the World Wildlife Fund, there are currently approximately 22,000 to 31,000 polar bears in the world. This is higher than the organization's estimate of 20,000 to 25,000 people in 2011 10 years ago.

So we can verify that, yes, recent research shows that the number of polar bears has actually increased recently.

Even so, many experts say that the rapidly melting ice may have long-term adverse effects on the livelihoods of polar bears.

Carbon dioxide is the main greenhouse gas emitted into the atmosphere. According to data from the U.S. Energy Information Administration, in 2018, Texas produced approximately 684 million tons of carbon dioxide. This is more than twice that of California.

The calculation looks at emissions from the residential, commercial, industrial, and transportation sectors.

So, we can verify that, yes, recent data shows that Texas has the largest greenhouse gas emissions in the United States.

Scientists use satellites, sensors and other tools to measure the amount of carbon dioxide in the air.

According to a report from the World Meteorological Organization, the United States emitted about 5.4 billion tons of carbon dioxide into the atmosphere in 2018, which is the last year of data recording. This is the second most in the world.

During the same period, China emitted more than 10 billion tons of carbon dioxide, accounting for about 30% of the total global emissions. According to multiple studies, China became the largest contributor around 2005 and has been at the top of the list ever since.

So, we can verify, no, Americans are not the biggest contributor to carbon dioxide. But scientists say that the contribution of the United States must be contained to mitigate the impact of climate change.

For more verification: coverage of the climate crossroads, please send "verification" to 214-977-6028.

You can turn off notifications at any time in the browser settings.