The oldest known bird fossil, from the age of dinosaurs, has skull features similar to modern chickens. The scientists who found it have nicknamed it "Wonderchicken." It's providing valuable insights into the evolution of birds.

Some astronomy thoughts to distract you from quarantine life under the coronavirus plague, from Guy Ottewell.

You'll love this video of a couple of penguins openly exploring Chicago's Shedd Aquarium, closed due to COVID-19.

Pine Island Glacier is one of the fastest-retreating glaciers in Antarctica. Watch the glacier’s ice front retreat and shed some notable icebergs over the past 2 decades.

It's OK to feed wild birds. Here are some tips for doing it the right way from a wildlife ecologist.

Circumzenithal arcs have been described as upside-down rainbows or "a grin in the sky." They're wonderful! See photos here.

Were dinosaurs warm-blooded or cold-blooded? According to a new study that analyzed the chemistry of dinosaur eggshells, the answer is "warm."

An intense storm and lake-effect snow walloped upstate New York - especially rural areas in western New York - in late February 2020. On the shores of Lake Erie, the storm created a dramatic display of thick, windblown ice on homes and buildings.

On February 6, weather stations recorded the hottest temperature on record for Antarctica, 64.9°F (18.3°C). The warm spell caused widespread melting on nearby glaciers

Bird-banding data in North America shows a spring migration pattern that's become progressively earlier with each of the last 5 decades, and a fall migration that's lasting longer than 50 years ago.