Ruddy copper butterflies are sexually dimorphic for color and color vision

It seems that reproductive success and sexual dimorphisms for dorsal color and for vision are inexorably interdependent in ruddy copper butterflies. Read more

Winter solstice dawn from Flagstaff Mountain amphitheater

My viewing of winter solstice dawn was quiet, but I had the conviction that this sort of observation reached far back into history, all around the world. Read more
dead tree

A forensic analysis of a dead ponderosa pine

Why did that one tree die? An expert is on the case. Read more

Cattails are on the move in North America

Invasive propensities of the various species are enhanced and more successful in disturbed environments. Consequently, both native and introduced cattails are expanding their ranges. Read more

Late-fall pollination reflects the globally changing climate

My observation that fall temperatures and pollination seemed to last longer this year is anecdotal, but the anecdote seems to fit into a documented pattern of climate change altering the onsets and durations of the seasons. Read more
Plan flying putting out fires by a neighborhood

Humans ignite almost every wildfire that threatens homes

Wildfires are a natural disturbance for these regions, but when combined with climate change and housing growth in the wildland-urban interface, they become larger and more destructive. Read more
Kamala Harris

With Kamala Harris, Americans yet again have trouble understanding what multiracial means

News that Sen. Kamala Harris was Joe Biden’s choice for the 2020 Democratic vice presidential nominee drove speculation and argumentation about her identity. The big question appeared to be, “Is Kamala Harris truly African American?” Read more
Intentionally mutilated head of Egyptian Pharaoh Hatshepsut. Elizabeth Ellis, CC BY-SA

Ancient cancel cultures: The defacement of statues in America replicates a tradition going back millennia

The result of months of protests over racial injustice and monument destruction may seem like a modern form of American political speech. It’s not. Read more
Police car moth on sneezeweed

Police car moths have conspicuous color patterns and fly during the day

Wielding all of these defenses, these moths have little to fear from birds or bats... Read more
Heat wave map

100 degrees in Siberia? 5 ways the extreme Arctic heat wave follows a disturbing pattern

What is happening in the Arctic is very real and should serve as a warning... Read more
Civil unrest

A justification for unrest? Look no further than the Bible and the Founding Fathers

Martin Luther King did not call for violence, but said “peace is not merely the absence of this tension, but the presence of justice" Read more
Person in a facemask

Flattening the mental health curve is the next big coronavirus challenge

We know the virus has a deadly impact on the human body. But its impact on our mental health may be deadly too. Read more