Quiz: Can You Tell Climate Change Fact From Fiction?

Climate change is a long-term shift in precipitation, temperature or other climate-related variables. Global warming is a worldwide increase in average surface temperatures. The jury's in: Both things are happening.

Weather refers to daily changes in our atmosphere while climate describes weather over a long period of time. So having an unusually cold day doesn't mean that global warming is not taking place.

Even then, a much higher percentage of experts were concerned about anthropogenic global warming than "global cooling" as noted in a survey of the climate science literature published from 1965 through 1979.

Carbon dioxide is the winner by a landslide, at 82 percent according to the EPA. CO2 is emitted through burning fossil fuels like coal and wood, and through some chemical reactions, like making cement. Greenhouse gases are the main cause of global warming, making our planet hotter.

Most nations agreed to aim to limit temperature increase to 2 degrees C (or 3.6 degrees F) above preindustrial levels. It may seem small, but that's the temp increase at which scientists believe ice sheets in Greenland and West Antarctica will melt at unstoppable rates.

Recycling is great. But scientists say going car-free has a much bigger impact. That was No. 2 on their list of options according to one study. No. 1? Having one less child.

Just 9 percent of plastic waste gets recycled. Most people thought the amount was 26 percent, according to a 2017 survey.

And the world keeps getting warmer. The warmest seven years have all been since 2015, according to the World Meteorological Organization.

You'll get differing answers on this but we think the best one is from climate scientist Kate Marvel. "It's too late to avoid climate change, but it's not too late to prevent the worst outcomes," she told The New York Times. Even if the planet is already warming, we still should do what we can limit the damage.