Earth, our home planet, is a world unlike any other. The third planet from the sun, Earth is the only place in the known universe confirmed to host life. With a radius of 3,959 miles, Earth is the ...

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 of travel is transforming, and sustainability is no longer optional—it’s the key to tourism’s future. A visionary ...

They were unable to characterize the star because of glare from the magnified background ... Earth will become inhospitable ...