给定一篇文章，将其分成 5 个段落，并为每个段落写一个标题。
这是一篇介绍气候变化的文章。
Title: What is climate change?
The first paragraph introduces what is climate change and how it relates to the greenhouse effect. It explains that human activities, such as burning fossil fuels, contribute to the increase of carbon dioxide and other greenhouse gases in the atmosphere, leading to global warming.

Title: Impacts of climate change 
The second paragraph discusses the impacts of climate change on different parts of the world, such as rising sea levels, more intense natural disasters, and habitat loss for animals. It suggests that climate change will increase the risk of conflict and displace millions of people in the future.

Title: Solutions to climate change 
The third paragraph proposes some solutions to climate change, including reducing carbon emissions by increasing the use of renewable energy, and improving energy efficiency in buildings and transportation. It mentions the importance of governments, businesses, and individuals working together to tackle this global challenge.

Title: Green initiatives
The fourth paragraph discusses some green initiatives that are being implemented worldwide. It highlights the importance of reducing waste, reusing resources, and recycling, such as plastic bags, bottles and paper. It also describes the use of green infrastructure – a system of natural or designed living components – that can enhance the resilience of cities against climate change.

Title: Individual actions 
The fifth paragraph suggests some simple actions that individuals can take to mitigate climate change, such as using public transportation, eating less meat, and purchasing energy-efficient appliances. It concludes that every individual has a responsibility to help reduce carbon emissions and transition towards a more sustainable future.