And, given the global nature of the challenges we now face, what on Earth can any of us do? Fortunately, Mike Berners-Lee has crunched the numbers and plotted a course of action that is practical and ...

David Bressan is a geologist who covers curiosities about Earth. Over the past 2 billion ... the world's continents eventually merge to form one hot, dry and largely uninhabitable landmass.

"A huge planet with a long name – IRAS 04125+2902 b – is really just a baby: only 3 million years old ... nascent planetary disk; however, there's no evidence of such an effect.

With a radius of 3,959 miles, Earth is the fifth largest planet in our solar system, and it's the only one known for sure to have liquid water on its surface. Earth is also unique in terms of ...

This story appears in the December 2009 issue of National Geographic magazine. It took humans thousands of years to explore our own planet and centuries to comprehend our neighboring planets, but ...

And, given the global nature of the challenges we now face, what on Earth can ... read this book. There Is No Planet B is full of practical guidance, evidence-based and robust, yet completely ...