Happy Earth Day! Activism on behalf of the Big Blue Marble is heating up — but, sadly, so is the planet itself. Earth — so hot right now. The Earth’s surface temperature is rising thanks to ...

Earth is our planet and we made it what it is today. Man has explored, unearthed and brought to life many secrets about this great planet. We know a lot of about it and much is yet to be uncovered.

Earth Day is April 22. The 43-year-old tradition, started in the spring of 1970, signaled the rise of the modern environmental movement. Around 20 million people across the United States took to ...