Or , come in the winter and enjoy snowshoeing and nearby skiing . Global warming may ruin many of nature 's wonders . Rising sea levels could make visiting New Orleans difficult in the future . The melting ice caps on Greenland and Antarctica would raise global temperatures, making it more likely that glaciers will melt faster than expected. Encouraged by warmer winters , pine beetles are ruining forests in Colorado .
Global warming may ruin many of nature 's wonders . Rising sea levels could make visiting New Orleans difficult in the future . The melting ice caps on Greenland and Antarctica would raise global temperatures, making it more likely that glaciers will melt faster than expected. Encouraged by warmer winters , pine beetles are ruining forests in Colorado .