Dogs and their owners: A chemical bond
Oxytocin, the "birth hormone," works on both sides!
Why do we love dogs so much? The answer may arise from the reason they love us so much. It's all in the hormones. Honest! More »
Continental connection: North, South America linked much earlier than thoughtAncient river moved crystals from Panama to Colombia, proving early land bridge between Americas More »
2015 Cool Science Image Contest WinnersCongratulations to our winners! More »
Spring forward: birds and flowers in a warming world!What happens when climate upsets nature's timing? More »