"The most climate-stressed regions all contained permafrost, which is vulnerable to thaw as temperatures rise," researcher Sue Natali said.

Leaving some NPS properties to the wildlife would benefit both the animals and the land, says author and former park ranger, ...

Alaska offers a respectable first class fare, but turn to the airline's partners for a truly luxe experience. Many or all of the products on this page are from partners who compensate us when you ...