The answer is yes. The world is changing, and the effects are visible. On NASA's official website, there are before and after pictures of farmland, rivers, valleys, mountains, and even the land around cites. These pictures are shocking. They show a drastic change in the landscape due to flooding in places where there shouldn't be flooding, and extreme droughts in usually wet climates. It is all because of the extra co2 us humans are releasing into the air via cars, planes, ships, factories, and many things we do in our day to day life, yet we don't even notice it. So, to answer the question, yes the world's climate and landscapes are changing due to the increase of atmospheric greenhouse gases.

Source:
Link - https://climate.nasa.gov/causes/