She has been spotted twice on the outskirts of Poland's Bialowieza Forest. She appears to be healthy, but she'll need to be removed from the herd before mating season.
A study in the Pacific Ocean finds that bags and bottles are sickening and killing reefs from Thailand to Australia. Coral reefs already are susceptible to disease due to unusually warm water.
Ginseng is a prized root in demand for it's wide use in traditional Chinese medicine. Some of the most valuable ginseng grows wild in Appalachia, but supplies are dwindling.
There's a new fear from climate change: bacteria and viruses buried in frozen ground coming back to life as the Arctic warms up. We went digging in permafrost to find out how worried we should be.
Interior Department Sec. Ryan Zinke announced the promotion of Paul Daniel Smith, who was reprimanded in 2006 for inappropriately using his position on behalf of Dan Snyder, who wanted a better view.
Just what exactly is permafrost? And what is happening now that it's warming up? To find out, we enter the Arctic Circle's secret world of ice and frozen history.
Hurricanes, fires and even hail contributed to billions of dollars in damages. The government study also finds that it was among the warmest years on record.
Residents of some Moscow suburbs complain their lives are being ruined by the smell and sight of giant garbage dumps that ring the city. There is no recycling of garbage in the Russian capital, all trash goes into the expanding landfills.
Authorities raised Mount Mayon's alert level to 4 out of a possible 5, indicating "intense unrest" and the possibility of a particularly violent, hazardous eruption within days.