This year marks the 55th anniversary of Earth Day! Every year on April 22, people worldwide mobilize to address some of the most urgent threats facing our environment, from climate change to ...

Add Yahoo as a preferred source to see more of our stories on Google. There's so much to celebrate in the month of April. The fourth month of the calendar year ushers in warm weather, tulips and Earth ...

Science is full of weird and wacky things. From the way our bodies work to the way that light moves through space, there's a lot that can surprise and intrigue us. Now, a bunch of users on Reddit have ...

April showers aren't the only thing the fourth month of the calendar year brings. In fact, there are a variety of April holidays to celebrate all month long, including April Fools' Day, Easter, Arbor ...