Â鶹ÊÓƵ

Stronger Antarctic leadership is urgently needed to safeguard the Southern Ocean—and beyond.Two-thirds of the world’s oceans fall outside national jurisdictions – they belong to no one and everyone.These international waters, known as the high

Evolutionary biologists have found fossil evidence of 110 species of pterosaurs, with wing spans ranging from 10 inches to over 33 feetI scout potential sites for camping and photography trips by looking at maps and reading about landscapes and

With dry air and clear skies, people in the west have much greater opportunity to enjoy the light shows at dawn and dusk and celestial phenomena. Following are comments and details, each starting with a question about mechanisms. 

New sources ranging from satellites to government records to social media are providing a wealth of opportunities to learn more about wildfire behavior and how it threatens people and affects ecosystems.

Boulder residents were acutely aware of the wildfires, for they had been breathing smoke since the Pine Gulch fire started near Grand Junction on July 31. But the proximity of the CalWood Fire and the sight of roiling smoke rising and forming pyrocumulus clouds at the northern edge of Boulder brought the terrible threat home.

With the setting of the sun and the onset of polar darkness, the Arctic Ocean would normally be crusted with sea ice along the Siberian coast by now. But this year, the water is still open.I’ve watched the region’s transformations since the 1980s as

A minimum of 21 subspecies have been described, usually geographically separated but sometimes with geographic ranges sharing a borderButterflies flitted among flowers beside South Boulder Creek, in Boulder's greenbelt near the town of Marshall.

As religious services went online to protect congregants from the coronavirus, a paradox emerged: Worshipers were connected via the internet to a potentially wide community, but it felt like a more private affair.

Protecting the peninsula is the most pressing priority due to rising threatsAntarctica, the world’s last true wilderness, has been protected by an international treaty for the last 60 years. But the same isn’t true for most of the ocean surrounding

Prickly poppies are distinguished from other species in the genus Argemone by the lack of spines on the upper sides of leavesPrickly poppies, Argemone polyanthemos, were abundant and in full bloom along the Degge Trail in the greenbelt north Boulder