Biology

The larger a cell type is, the rarer it is in the body—and vice versa—a new study shows

Scientists discover why fathers usually don’t pass on their mitochondria’s genome

An ancient frog, bird and dinosaur wore elusive yellow and orange shades, a new lab technique reveals

Here’s the best, most inspiring and coolest science we encountered this year

Your brain might be like a computer, and your digestive system might be like a tube. But in the end, your whole body is just a bag full of bags

From fish that dance to “see” to frogs disguised as poop to boat-attacking killer whales, Scientific American rounds up our favorite odd animals of 2023

Brain wave studies suggest that when it comes to eating and sleeping, reindeer multitask to survive in the harsh Arctic

In 2023 we learned that cats really are choosing to ignore humans and that—despite dogs getting all the glory when it comes to retrieving prowess—cats want to play fetch, too

Cephalopods have developed unique visual systems to deal with their underwater world

Some species of cave-dwelling spiders lack eyes but still maintain the ability to sense light, which likely protects them from the arid environments at the sunny mouths of caves

Untangling the genetics that underlie facial features

We’re looking back at 2023 for our favorite podcast shows and one about the largest bird to ever fly the skies just flew to the top of the list.