human
I've been hearing a lot about global warming lately. Is it really a serious problem?
assistant
Yes, global warming is a serious problem. It's caused by the burning of fossil fuels and other human activities that release greenhouse gases into the atmosphere. These gases trap heat in the atmosphere, causing temperatures to rise and resulting in many negative impacts such as rising sea levels, extreme weather events, and changes in ecosystems. Scientists agree that we need to reduce our emissions to slow down or reverse global warming, so it's important for everyone to take action now.