Geologists say the worm-like creature - about the size of a grain of rice - is the 1st ancestor on the family tree that contains most animals today, including humans.

The origin of digits in land vertebrates is hotly debated, but a new study suggests that human hands likely evolved from the fins of Elpistostege, a fish that lived more than 380 million years ago.

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.