For the first time this season, the Ice Age Trail Alliance’s Trail Crew is heading to Polk County to reroute and improve a ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. It would currently be near ...

On land, the Isthmus of Panama kicked off possibly the greatest natural experiment in the history of life on Earth. In the water, this narrow strip of land did something completely different: it ...