Visit Arches and discover a landscape of contrasting colors, landforms and textures unlike any other in the world. The park has over 2,000 natural stone arches, in addition to hundreds of soaring pinnacles, massive fins and giant balanced rocks. This red rock wonderland will amaze you with its formations, refresh you with its trails, and inspire you with its sunsets.
A rugged, whitewater river flowing northward through deep canyons, the New River is among the oldest rivers on the continent. New River Gorge National River in West Virginia encompasses over 70,000 acres of land along the New River, is rich in cultural and natural history, and offers an abundance of scenic and recreational opportunities.
Denali is six million acres of wild land, bisected by one ribbon of road. Travelers along it see the relatively low-elevation taiga forest give way to high alpine tundra and snowy mountains, culminating in North America's tallest peak, 20,310' Denali. Wild animals large and small roam un-fenced lands, living as they have for ages. Solitude, tranquility and wilderness await.
DOINews: New Research Suggests that Urbanization & Higher Temperatures Influence Butterfly Emergence Patterns
A team of researchers focused on 20 common butterfly species in Ohio to examine the effect of temperature and urban density on butterfly emergence patterns. Results revealed a wide range of responses to urbanization across species, but one finding stood out.
“The combined effect of an urban area and a warmer part of the state appeared to delay emergence in seven of the 20 species,” Wepprich says.
The affected species in these areas emerged days or weeks after other butterflies of the same species emerged in either rural areas in the warmer parts of Ohio, or urban areas in colder parts of Ohio.
“Even though butterflies often change their emergence predictably to small increases in temperature, these species responded in unexpected ways to larger increases in temperature,” Wepprich says.
“Scientists often use analogies for global climate change, such as urban warming, to understand how species' might respond to a warmer future,” Wepprich adds. “This allows us to estimate which species are more vulnerable to climate change.
“We don't really know precisely where the tipping point is, or why only some species respond this way, but something is happening here. We're still working to better understand what's going on with these butterfly species and what consequences there may be for their populations.”