If you can name it, you're a true Earth Day fan. Otherwise, read on to find out what it is along with other fun facts about the planet and this annual celebration of Mother Earth. There's more ...

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Here are some fun facts about Earth as we celebrate this planet we live on for Earth Day. The Earth’s diameter at the equator is 7,926 miles. Sign up for our Newsletters Our atmosphere is made ...

For this reason black holes are invisible to the eye, as lightless as the empty, dark space surrounding them. Scientists know ...

Earth is our home planet, and it's the only place in the universe where we know for certain that life exists. Earth formed over 4.5 billion years ago from a swirling cloud of gas and dust squished ...

The world is a fascinating place, and it's full of weird and interesting facts that you might have ... There are more trees on earth than there are stars in the Milk Way Galaxy.

On 31 March 2007, more than 2.2 million individuals and 2,000 businesses in Sydney, Australia switched off their lights for one hour, which marked the beginning of the Earth Hour movement. And that ...