This Evidence Upended Theories on the First Animal to Reach Land
While Tiktaalik and Icthyostega often get the credit, fossils have shown that arthropods likely beat them by hundreds of millions of years. ...read more
While Tiktaalik and Icthyostega often get the credit, fossils have shown that arthropods likely beat them by hundreds of millions of years. ...read more
The U.S. was already grappling with a deepening deficit of school nurses. Then the pandemic hit. ...read more