Why are scientists proposing to warm up Mars, how will they do it?

[Collection]Scientists proposed to introduce engineered nanoparticles into Mars' atmosphere to raise its temperature by 50 degrees Fahrenheit over ten years. These particles would enhance the natural greenhouse effect. The researchers believe warming Mars' atmosphere is a crucial step despite the planet's harsh conditions. They also stress the importance of studying potential unintended consequences, including the possibility of past or present life on Mars.