Stay on top of what’s happening in the Bay Area with essential Bay Area news stories, sent to your inbox every weekday. The Bay Bay Area-raised host Ericka Cruz Guevarra brings you context and ...

It is virtually impossible for a prospective Magellanic penguin mother to find or build a soft spot to lay her eggs. So it turns out that her eggs come with extra-thick shells to withstand being laid ...

Healthy corals are colorful and full of life. And under normal conditions, corals and algae depend on one another. The corals offer the algae protection and the photosynthesizing algae provide the ...

Marcel Proust had his memory-infused madeleines. Marcel Marceau had his invisible dog and a lifetime of pantomime. But it’s unlikely we’ll ever see a more beguiling Marcel than the inch-tall ...

Scientists devised a mathematic model that helps explains how Nipponites, some of the wonkiest ammonites, built their shells. By Sabrina Imbler If you’ve seen one ammonite, you may think you’ve seen ...

A day lasted only about 23-and-a-half hours. The Earth turned faster than it does today. The new study used lasers to sample tiny slices of a mollusk's shell and count the growth rings. When dinosaurs ...